Calculated Industries Machinist Calc 4086, Machinist Calc Pro 4087 User Manual

MACHINIST CALC™ AND MACHINIST CALC™ PRO

The Machinist Calc™ Machining Math and Reference Tool (Model

4086) and the Machinist Calc™ Pro Advanced Machining Math and Reference Tool (Model 4087) both provide fast, precise solutions for your every day machining calculations. With the Machinist Calc/ Machinist Calc Pro you will spend less time looking up your mostneeded calculations on charts, in books or on the Internet and more time machining.

This User’s Guide has definitions, examples and instructions for both calculators. Information specific to a particular model is indicated in the Table of Contents and throughout the User’s Guide.

Both calculators will provide you with hundreds of machiningspecific calculations, including:

• Cutting Speed, Spindle Speed (RPM)

• Feed Rate, Cutting Feed, Feed per Tooth (Chip Load)

• Built-in Drill and Thread Size reference tables

• Bolt Pattern hole layouts

• Work in and convert between U.S. and Metric units, including:

• Decimal Inches/Mils

• Feet-Inch-Fractions

• m, mm, cm

• Area, Volume and Weight

In addition, the Machinist Calc Pro (Model 4087) has:

• Advanced Built-in Drill and Thread Size reference tables

• Drill Point Cut Depth solutions

• Wire Sizes and 3-Wire Measurements

• Advanced Bolt Pattern hole layouts with center x, y coordinate

• Right triangle math

• Trigonometric solutions

Us e r 's GU i d e — 1

TABLE OF CONTENTS

GETTING STARTED ........................................................................................ 5

KEY DEFINITIONS ........................................................................................ 5

Basic Function Keys .................................................................................... 5

Dimensional Function Keys ........................................................................ 6

Weight and Volume Function Keys ............................................................. 7

Trigonometric Function Keys

Miscellaneous Functions ............................................................................ 8

Machinist Function Keys ............................................................................. 9

SETTING FRACTIONAL RESOLUTIONS .................................................. 13

Permanently Set Fractional Resolution .................................................... 13

Temporarily Set Fractional Resolution ...................................................... 14

PREFERENCE SETTINGS ......................................................................... 14

ENTERING DIMENSIONS .......................................................................... 16

Linear Dimensions .................................................................................... 16

Square and Cubic Dimensions ................................................................. 17

CONVERSIONS .......................................................................................... 17

Linear Conversions ................................................................................... 17

Square and Cubic Conversions ................................................................ 19

Weight Conversions .................................................................................. 19

Weight per Volume and Volume Conversions .......................................... 19

BASIC MATH OPERATIONS ...................................................................... 20

Adding and Subtracting Dimensions ........................................................ 20

Multiplying Dimensions ............................................................................. 21

Dividing Dimensions ................................................................................. 21

Calculating Percentages ........................................................................... 21

MEMORY OPERATION ..............................................................................22

Using M+ ................................................................................................... 22

Using Memory Storage Keys (M1 – M9) ................................................... 23

PAPERLESS TAPE OPERATION ............................................................... 23

USING THE MACHINIST CALC/MACHINIST CALC PRO ........................... 25

(NOT AVAILABLE ON MODEL 4086)

........................... 7

2 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

CUTTING SPEED ....................................................................................... 25

Cutting Speed – Milling ............................................................................. 26

Cutting Speed – Turning ........................................................................... 26

Cutting Speed – Drilling ............................................................................ 27

Cutting Speed – Using Metric Mode ......................................................... 27

RPM (SPINDLE SPEED) ............................................................................. 28

RPM – Milling ............................................................................................ 28

RPM – Turning .......................................................................................... 29

RPM – Drilling ........................................................................................... 30

FEED PER TOOTH (CHIP LOAD) ............................................................... 30

Feed per Tooth – Based on Cutting Feed and # of Teeth ........................ 30

Feed per Tooth – Based on Feed Rate, RPM and # of Teeth .................. 31

CUTTING FEED .......................................................................................... 31

Cutting Feed – Based on Feed per Tooth and # of Teeth ........................ 32

Cutting Feed – Based on Feed Rate and RPM ........................................ 32

FEED RATE ................................................................................................. 33

Feed Rate – Based on Cutting Feed and RPM (for Turning) ................... 33

Feed Rate – Based on Cutting Feed and RPM (for Drilling) .................... 33

Feed Rate – Based on Feed per Tooth, RPM and # of Teeth .................. 34

DRILL SIZES ............................................................................................... 35

Numeric Drill Size Entry ............................................................................ 35

Letter Drill Size Entry ................................................................................ 36

Inch Drill Size Entry .................................................................................. 37

Millimeter Drill Size Entry .......................................................................... 38

Drill Point

(NOT AVAILABLE ON MODEL 4086)

........................................................ 38

THREAD SIZING ......................................................................................... 39

Basic Thread Sizing .................................................................................. 39

Numeric Thread Size – Model 4086 ......................................................... 40

Fractional Thread Size – Model 4086 ....................................................... 42

Metric Thread Size – Model 4086 ............................................................. 43

Thread Classication

(NOT AVAILABLE ON MODEL 4086)

..................................... 45

Changing Thread Classes ........................................................................ 45

Us e r 's GU i d e — 3

Changing a U.S. Thread Classication ..................................................... 46

Changing a Metric Thread Classication .................................................. 46

Numeric Thread Size – Model 4087 ......................................................... 47

Fractional Thread Size – Model 4087 ....................................................... 48

Metric Thread Size – Model 4087 ............................................................. 50

Custom Thread Percentage

(NOT AVAILABLE ON MODEL 4086)

........................... 51

WIRE SIZES AND 3-WIRE MEASUREMENTS

(NOT AVAILABLE ON MODEL 4086)

........................................................................... 52

Wire Size ................................................................................................... 52

3-Wire Measurement – Known Thread Size and Wire Size ..................... 52

Pitch Diameter – Known 3-Wire Measurement and Wire Size ................. 53

BOLT PATTERN ..........................................................................................54

Bolt Pattern – Model 4086 ........................................................................ 55

Bolt Pattern – Model 4087 ........................................................................ 56

RIGHT TRIANGLE FUNCTIONS

(NOT AVAILABLE ON MODEL 4086)

..................... 57

Right Triangle – Based on Adjacent and Opposite Legs .......................... 57

Right Triangle – Based on Hypotenuse and Angle ................................... 58

CIRCLE CALCULATIONS ........................................................................... 59

Circumference and Area – Based on Diameter ........................................ 59

Circumference and Area – Based on Radius

(NOT AVAILAB LE ON MODEL 4086)

........................................................................ 59

BASIC D:M:S AND TRIGONOMETRY EXAMPLES ................................... 59

Converting Degrees:Minutes:Seconds ..................................................... 59

Time Calculations Using D:M:S ................................................................ 60

Trigonometric Functions

(NOT AVAILABLE ON MODEL 4086)

................................ 60

APPENDIX A – DEFAULT SETTINGS .......................................................... 62

APPENDIX B – PREFERENCE SETTINGS .................................................. 63

APPENDIX C – CARE INSTRUCTIONS ........................................................ 66

APPENDIX D – ACCURACY/ERRORS, AUTO

SHUT-OFF, BATTERIES, RESET ................................................................. 66

REPAIR AND RETURN .................................................................................. 68

WARRANTY ................................................................................................... 69

4 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

GETTING STARTED

You may want to practice getting a feel for your calculator keys by

reading through the key denitions and learning how to enter data,

how to store values, etc., before proceeding to the examples.

KEY DEFINITIONS

Basic Function Keys

On/Clear Key — Turns on power. Pressing once clears the last entry and the display. Pressing twice clears all non-permanent values.

+-* ,=

0-9

and

1 - 9

Off — Turns all power off. Clears all non-permanent values.

Arithmetic operation keys.

Keys used for entering numbers.

Convert — Used with the dimensional keys to convert between units or with other keys to access special functions.

Store — Used for storing values.

Storage Registers M1 through M9 — Used to store

values in Memory registers 1 through 9.

Recall — Used with other keys to recall stored values and settings.

Memory Clear (M-R/C) — Clears Accumulative Memory without changing current display.

Accumulative Memory — Adds displayed value to Accumulative Memory.

M- — Subtracts displayed value from Accumulative

Memory.

Us e r 's GU i d e — 5

Dimensional Function Keys

Millimeters —

repeated presses toggling between linear, area and volume units. Converts dimensional value to units of millimeters, with repeated presses toggling between millimeters and meters.

Centimeters (cm) — Identies entry as

centimeters, with repeated presses toggling between linear, area and volume units.

Meters (m)

ed presses toggling between linear, area and volume units.

Feet

— Identies entry as Feet, with repeated press-

es of

g 7

units. Also used with i and / for entering Feet-Inch values. Repeated presses of

toggle between fractional Feet-Inch and decimal Feet.

Inch

— Identies entry as Inches, with repeated

presses toggling between linear, area and volume units. Entry can be whole or decimal numbers. Also used with / for entering fractional Inch values (e.g.,

9i1/2

toggle between fractional and decimal Inches.

Fraction Bar

can be entered as proper (1/2, 1/8, 1/16) or improper (3/2, 9/8). If the denominator (bottom) is not entered,

the calculator’s fractional accuracy setting is automatically used. Results are always shown in typical dimensional fractional format.

Identies entry as millimeters, with

— Identies entry as meters, with repeat-

toggling between linear, area and volume

during conversions

g 7

). Repeated presses during conversions

— Used to enter fractions. Fractions

6 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

1/1000” (mils)

0.001 Inch and displays the result as Inches. Converts

a linear entry to decimal Inches. For both methods,

the result is rounded and displayed to three decimal places.

— Multiplies a dimensionless entry by

Weight and Volume Function Keys

Trigonometric Function Keys (NOT AVAILABLE ON MODEL 4086)

Tons — Enters or converts a weight or volume

value to tons.

Pounds (lbs) — Enters or converts a weight or

volume value to pounds.

Metric Tons (met tons) — Enters or converts a

weight or volume value to metric tons.

Grams — Enters or converts a weight or volume

value to grams.

Kilograms (kg) — Enters or converts a weight or volume value to kilograms.

Weight per Volume (wt/vol) — Stores a new

weight per volume as pounds per cubic foot or

other format as shown below. Default value is 490

pounds per cubic foot of steel.

● Pounds per cubic foot

● Pounds per cubic inch

● Metric tons per cubic meter

● Kilograms per cubic meter

Sine

— Calculates the Sine of an entered degree or

unitless value.

Arcsine (ArcSine)

entered or calculated Sine value.

Cosine (Cos)

entered degree or unitless value.

Arccosine (ArcCos)

entered or calculated Cosine value.

Tangent (Tan)

entered degree or unitless value.

— Calculates the angle for the

— Calculates the Cosine of an

— Calculates the angle for the

— Calculates the Tangent of an

(cont'd)

Us e r 's GU i d e — 7

(cont'd)

Miscellaneous Functions

Arctangent (ArcTan)

entered or calculated Tangent value.

Degrees:Minutes:Seconds (dms◄►deg)

Converts between D:M:S and decimal degree

formats; repeated presses will toggle between the two formats.

Percentage — Used to nd a given percent of a

number.

Model 4086

x2 — Squares the value on the display.

Model 4087

Model 4087 only

Backspace Function

keystroke at a time (unlike the O function, which deletes the entire entry).

g %

Model 4086

Model 4087

Square Root ( )

the number on the display.

Reciprocal (1/x)

number (

e.g.,

— Calculates the angle for the

— Used to delete entries one

— Calculates the Square Root of

— Finds the Reciprocal of a

8g,=

0.12 5).

—

8 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

Clear All

settings. Does not affect Preference Settings.

Change Sign (+/–)

between negative and positive value.

— Displays value of π (3.1415927).

Paperless Tape (Tape) Tape mode (see Paperless Tape section), which

keeps track of your past 30 entries. Useful for

checking strings of numbers.

— Returns all stored values to the default

— Toggle displayed value

— Accesses the Paperless

Machinist Function Keys

Preference Settings (Prefs)

customizable settings, such as dimensional answer

formats (see Preference Settings section).

— Accesses various

Model 4087 only

Cutting Speed

Speed. Unitless entries assumed feet per minute in U.S. mode; meters per minute in Metric mode. Calculates Cutting Speed given entered Diameter and RPM (Spindle Speed). Result is displayed as a

whole number.

Revolutions per Minute

RPM (Spindle Speed). Calculates RPM given entered Diameter and Cutting Speed. Result is displayed as a

whole number.

3-Wire Measurement (3-W Measure)

or calculates a Three-Wire Measurement. Unitless

entries assumed Inches in U.S. mode; millimeters in

Metric mode. Calculates the maximum Three-Wire

Measurement and Pitch Diameter given entered Thread Size and Wire Size, as long as the selected Thread Classication is set to an External thread

type. If a Three-Wire Measurement value is entered,

the Pitch Diameter calculation is based on this

entered measurement.

Feed Rate

Unitless entries assumed inches per minute in

U.S. mode; millimeters per minute in Metric mode. Calculates Feed Rate given values for Cutting Feed and RPM (Spindle Speed) or Feed per Tooth (Chip Load), RPM and Number of Teeth. If all of these

values are entered, the calculation based on Cutting

Feed and RPM takes precedence.

— Enters or calculates Cutting

— Enters or calculates

— Enters

— Enters or calculates Feed Rate.

(cont'd)

Us e r 's GU i d e — 9

(cont'd)

Model 4087 only

Model 4086 only

Wire Size

3-Wire Measurements. Unitless entries assumed Inches in U.S. mode; millimeters in Metric mode.

Calculates the recommended Best (Ideal), Maximum

and Minimum Wire Sizes given an entered Thread Size.

Bolt Pattern

Bolt Pattern. Calculates the hole Center-to-Center

Spacing and the x and y coordinates for each hole in a Bolt Pattern given entered Diameter, Number of Bolt Holes, Starting Angle (optional) and Center x and

y coordinates (optional; Model 4087 only).

Thread Classication (Thread Class)

to select the Thread Class for numeric and fractional Threads and the Tolerance Class for metric Threads. The default Class for numeric and fractional Thread

Sizes is 2B (Internal) and the default Tolerance Class for metric Thread Sizes is 6H (Internal). See

Thread Sizing section for further details on available

Classes.

Starting Angle (Start Angle) — Enters the Starting Angle of the rst hole of a Bolt Pattern, with 0° being

the three o’clock position and the rotation going counterclockwise.

— Enters or calculates Wire Size for

— Enters the number of holes in a

— Used

Model 4087 only

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Thread Size

Thread Size and provides Thread characteristics such as Cut Tap Drill Size, Minimum Major Diameter,

etc. See Thread Sizing section for further details on entry format, valid entries and a listing of the resulting Thread characteristics.

% Thread

Percentage for use in determining screw Tap Drill Sizes. Default value is 75%.

— Enters a numeric, fractional or metric

— Enters a non-standard Thread Grip

Drill Size

or metric Drill Size, displaying the decimal Inch equivalent of the Drill Size. The next smaller Drill Size is displayed if the entered value doesn’t match a Drill Size. Repeated presses of D or + toggle through Drill Sizes in increasing order. Presses of - toggle through Drill Sizes in decreasing order. Selected Drill Size is stored upon exiting function.

— Enters a numeric, letter, fractional

Model 4087 only

Drill Point

Point. Calculates the Drill Point Cut Depth that needs

to be taken into account when it’s necessary to

maintain a specic full diameter depth.

Number of Teeth

a tool. Default value is 1.

Feed per Tooth

Tooth (Chip Load). Unitless entries assumed Inches in U.S. mode; millimeters in Metric mode. Calculates Feed per Tooth given entered Cutting Feed and Number of Teeth or RPM (Spindle Speed), Feed Rate and Number of Teeth. If all of these values are entered, the calculation based on Cutting Feed and Number of Teeth takes precedence.

Cutting Feed

Unitless entries assumed inches per revolution in

U.S. mode; millimeters per revolution in Metric mode. Calculates Cutting Feed given entered Feed per Tooth (Chip Load) and Number of Teeth or Feed Rate and RPM (Spindle Speed). If all of these values are entered, the calculation based on Feed per Tooth and Number of Teeth takes precedence.

Diameter

Area and Circumference given entered Diameter. On Model 4087, calculates Diameter given entered

Radius.

— Enters the Cutting Angle of a Drill

— Enters the Number of Teeth on

— Enters or calculates Feed per

— Enters or calculates Cutting Feed.

— Enters a Diameter and calculates circle

(cont'd)

Us e r 's GU i d e — 11

(cont'd)

Model 4087 only

Radius

Radius given entered Diameter.

Alpha

While in this mode, a letter can be selected and used with D to enter a letter Drill Size. Entering this mode with a unitless entry between 1 and 26 will display the corresponding letter of the alphabet (i.e. mode, presses of 8 or + toggle forward through the alphabet, while presses of - toggle backward.

Adjacent (x) — Enters or calculates the Adjacent

(horizontal) leg of a right triangle. Calculates Adjacent

value given two other right-triangle values. Also enters the Center x-coordinate of a Bolt Pattern.

Opposite (y) — Enters or calculates the Opposite

(vertical) leg or height of a right triangle. Calculates

Opposite value given two other right-triangle values.

Also enters the Center y-coordinate of a Bolt Pattern.

Hypotenuse (r) — Enters or calculates the

Hypotenuse (diagonal) of a right triangle. Calculates Hypotenuse value given two other right-triangle

values.

— Enters or calculates a Radius. Calculates

— Enters alphabet character selection mode.

5g8

displays the letter E). While in Alpha

Model 4087 only

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Angle (θ) — Enters or calculates an Angle, providing

the Adjacent Angle for both instances. Calculates

an Angle given two other right-triangle values. Also

enters the Starting Angle of the rst hole of a Bolt Pattern, with 0° being the three o’clock position and

the rotation going counterclockwise.

SETTINg FracTIONal rESOluTIONS

The Machinist Calc and Machinist Calc Pro are set to display fractional answers in 64ths of an Inch. All examples in this User’s

Guide are based on 1/64”. However, you may select Fractional Resolution to be displayed in other formats (e.g., 1/16”, 1/32”, etc.). The methods for permanently and temporarily changing Fractional

Resolution are shown in the following sections.

Permanently Set Fractional Resolution

To permanently set the Fractional Resolution, you must be in Preference Setting mode.

KEYSTROKE DI SPL AY

1. Access Preference Settings:

2. Toggle through available Fractional Resolutions:

+ + + + + +

3. To permanently set the Fractional Resolution you have

(Prefs) FRAC 0-1/64 INCH*

FRAC 0-1/2 INCH

FRAC 0-1/4 INCH

FRAC 0-1/8 INCH

FRAC 0-1/16 INCH

FRAC 0-1/32 INCH

(repeats options) FRAC 0-1/64 INCH

selected above, press O (or any key) to set the displayed Fractional Resolution and exit Preference Settings.

4. To recall your selected Fractional Resolution:

* 1/64” is the default setting. The display may differ from the example

depending on what the resolution is currently set to.

STD 0-1/64 INCH

Us e r 's GU i d e — 13

Temporarily Set Fractional Resolution

You can also convert a fractional value to a different resolution temporarily while solving a problem. In the example below, add

1/64th

to 44/64th of an Inch and then convert the answer to other

Fractional Resolutions:

KEYSTROKE DI SPL AY

OO 44/64 +1/64=

(1/16)

(1/2)

(1/32)

(1/4)

(1/64)

(1/8)

g8 OO

* Changing the Fractional Resolution on a displayed value does not

alter your Permanent Fractional Resolution Setting (set in Preference Settings).

Note: This setting is temporary; it will revert back to your Permanent Fractional Setting upon press of off.

* 0.

or when you turn the calculator

0-44/64 INCH

0-45/64 INCH

0-11/16 INCH

0-1/2 INCH

0-23/32 INCH

0-3/4 INCH

0-45/64 INCH

0-3/4 INCH

PrEFErENcE SETTINgS

Press g, then S to access the Preferences menu. Continue pressing S to toggle through different Preferences. Press

or - keys to toggle between options of the different

Preferences. Press O to exit Preferences. Your calculator

will keep your Preference Settings until a Full Reset alters

your settings to the default values (see Appendix for more information).

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KEYSTROKE DI SPL AY

gSS

(Functional Result Rounding) F-RND 0.0000

+ +

(repeats options) F-RND 0.0000

Third press of

(Default Unit Format) US UnITS

(repeats options) US UnITS

Fourth press of

(Area Answer Format) AREA Std.

+ + +

(repeats options) AREA Std.

Fifth press of

(Volume Answer Format) VOL Std.

+ + +

(repeats options) VOL Std.

Sixth press of

(Fractional Mode) FRAC Std.

(repeats options) FRAC Std.

Seventh press of

(Mathematical Operation) MATH OrDEr

(repeats options) MATH OrDEr

(Prefs)

F-RND 0.000

F-RND FLOAT

METRC UnITS

AREA 0. SQ FEET

AREA 0. SQ INCH

AREA 0. SQ M

VOL 0. CU FEET

VOL 0. CU M

VOL 0. CU INCH

FRAC COnST

MATH CHAIn

Us e r 's GU i d e — 15

ENTErINg DImENSIONS

Note: Unlike other Calculated Industries/Construction Master calculators, the Machinist Calc and Machinist Calc Pro do not have a dedicated Feet key. Feet is a secondary function located above the

key, so you have to use the g key, then 7 to enter or calculate

dimensions using Feet. Below are some examples.

Enter 2 Feet, then label as square and cubic units:

DIMENSIONS KEYSTROKE DI SPL AY

2 Feet

2 square Feet

2 cubic Feet

Enter 2 Feet, 3 Inches:

KEYSTROKE DI SPL AY

2g73i

Linear Dimensions

2g7 g7 g7

2 FEET 3 INCH

2 FEET

2 SQ FEET

2 CU FEET

Examples of how linear dimensions are entered (press after each entry):

DIMENSIONS KEYSTROKE

23 mils

4.5 Inches

95 millimeters

1,320 Feet

201 meters

16 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

1320g7

201g9

23B

4.5i 95m

Square and Cubic Dimensions

Examples of how square and cubic dimensions are entered

(press

DIMENSIONS KEYSTROKE

14 square Inches

11 square millimeters

1.5 cubic meters

3 cubic Feet

cONvErSIONS

Linear Conversions

Convert 10 Feet 6 Inches to other dimensions, including metric:

KEYSTROKE DI SPL AY

after each entry):

14ii 11mm

1.5g999

3g7g7g7

OO 10g76i g g7 g

* 126.000 INCH

(Feet) 10.5 FEET

i gm g5 g9

(cm) 320.04 CM

(m) 3.2004 M

10 FEET 6 INCH

126. INCH

3200.4 MM

*Converting a linear value using the B key will result in the decimal Inch equivalent of the value, rounded to three decimal places. Only unitless values are multiplied by 0.001 Inches when using this key.

(cont'd)

Us e r 's GU i d e — 17

(cont'd)

Convert 15 Feet 9-1/2 Inches to decimal Feet. Then convert back to Feet-Inch-Fractions.

KEYSTROKE DI SPL AY

OO 15g79i1/2 g7 g7

Convert 17.32 Feet to Feet-Inch-Fractions:

KEYSTROKE DI SPL AY

(Feet) 15.791667 FEET

15 FEET 9-1/2 INCH

(Feet)

17.32g7 =g7

17 FEET 3-27/32 INCH

g7 g

g7g7

Convert 8-1/8 Inches to decimal Inches. Then convert to decimal Feet.

KEYSTROKE DI SPL AY

17 FEET 3-27/32 INCH

17.32 FEET

207.84 INCH

OO 8i1/8 g

(Feet) 0.6770833 FEET

8-1/8 INCH

8.12 5 INCH

Convert 9.0625 Inches to fractional Inches. Then convert to decimal Feet.

KEYSTROKE DI SPL AY

9.0625i g7

18 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

(Feet) 0.7552083 FEET

9.0625 INCH

Square and Cubic Conversions

Convert 6 square Feet to other square dimensions:

KEYSTROKE DI SPL AY

OO 6g7g7 gm g9 g5

Convert 0.05 cubic meters to other dimensions:

KEYSTROKE DI SPL AY

(m) 0.5574182 SQ M

(cm) 5574.1824 SQ CM

(Feet) 6 SQ FEET

557418.24 SQ MM

OO .05g999 gm g5

(cm) 50000. CU CM

gi g7

Weight Conversions

Convert 1.5 tons to pounds and kilograms:

KEYSTROKE DI SPL AY

(Feet) 1.7657333 CU FEET

(m) 0.05 CU M

50000000. CU MM

3051.1872 CU INCH

1.5g6 g1 g4

(kg) 1360.7771 KG

(lbs) 3000. LBS

(tons) 1.5 TON

Weight per Volume and Volume Conversions

Convert 2 cubic Feet of stainless steel to pounds, tons,

kilograms, and metric tons if the steel weighs 7,480 kilograms per cubic meter.

Us e r 's GU i d e — 19

(cont'd)

KEYSTROKE DI SPL AY

1. Store the weight per volume:

7480S0000

2. Enter steel volume:

(wt /vol)

2 g7 g 7g 7

3. Convert to pounds, tons, kilograms and metric tons:

g4 g6 g1 g3

4. Change the weight per volume back to the default value:

490S00

* The number of 0 presses may vary, depending on the last units displayed when wt/vol was last recalled/stored. By default, pounds per

cubic foot is displayed rst.

BaSIc maTH OPEraTIONS

(lbs) 933.92229 LBS

(tons) 0.4669611 TON

(kg) 423.62003 KG

(met tons) 0.42362 MTON

(wt /vol)

7480. KG/ CU M

2 CU FEET

490. LBS/ CU FEET

Adding and Subtracting Dimensions

Add the following measurements:

• 6 Feet 2-1/2 Inches

• 11 Feet 5-1/4 Inches

• 18.25 Inches

Then subtract 2-1/8 Inches.

KEYSTROKE DI SPL AY

6g72i1/2+ 11g75i1/4+

18.25i=

-2i1/8=

20 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

6 FEET 2-1/2 INCH

17 FEET 7-3/4 INCH

19 FEET 2 INCH

18 FEET 11-7/8 INCH

Multiplying Dimensions

Multiply 5 Feet 3 Inches by 11 Feet 6-1/2 Inches:

KEYSTROKE DI SPL AY

5g73i* 11g76i1/2=

Multiply 2 Feet 7 Inches by 10:

KEYSTROKE DI SPL AY

2g77i*10=

Dividing Dimensions

Divide 30 Feet 4 Inches by 7 Inches:

KEYSTROKE DI SPL AY

30g74i,7i=

Divide 20 Feet 3 Inches by 9:

KEYSTROKE DI SPL AY

52.

20g73i,9=

Calculating Percentages

5 FEET 3 INCH

60.59375 SQ FEET

25 FEET 10 INCH

2 FEET 3 INCH

The % number or for working add-on, discount or division percentage calculations. It can be used with any type of number, in

any dimension (Feet, Inch, millimeter, etc.) and any type of convention (non-dimensioned, linear, square or cubic).

Find 18% of 50 Feet:

KEYSTROKE DI SPL AY

OO 50g7*18%

Take 20% from 17 Feet 6 Inches:

key can be used for nding a given percent of a

9 FEET 0 INCH

(cont'd)

Us e r 's GU i d e — 21

(cont'd)

KEYSTROKE DI SPL AY

17g76i-20%

mEmOrY OPEraTION

Whenever the M key is pressed, the displayed value will be

added to the Memory. Other Memory functions:

FUNCTION KEYSTROKE

Add to Memory

Subtract from Memory

Recall total in Memory

Display/Clear Memory

Clear Memory

Memory is semi-permanent, clearing only when you do one of the following:

– turn off the calculator – press – press – press

rr gr g*

(Clear All).

14 FEET 0 INCH

When Memory is recalled (

will display the calculated Average and total Count of the

accumulated values.

Using M+

KEYSTROKE DI SPL AY

355M 255M 745gM

(M-)

rM M M rr

22 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

), consecutive presses of

r M

TOTAL - 135.

M+ 355.

M+ 255.

M- 745.

AVG - 45.

COUNT 3.

M+ - 135.

Using Memory Storage Keys (M1- M9)

In addition to the standard cumulative Memory (as previously

described), your calculator has nine independent Storage Registers – M1 through M9 – that can be used to permanently

store single, noncumulative values. The following example shows the use of M1 ( presses of the 1 key with presses of the corresponding number key (

You can replace a value in one of these Memory registers by storing a new value in place of the stored value.

FUNCTION KEYSTROKE

Store single value in M1

Clear M1

Recall M1

Store 175 into M1, recall the value, and then clear the value:

KEYSTROKE DI SPL AY

2-9

175S1

). To use M2 - M9, replace the

S 1

MEM-1

0S1

175.

oO r1 0S1

MEM-1

175.

PaPErlESS TaPE OPEraTION

The Paperless Tape allows you to display and review the last thirty entries of a regular math or basic dimensional math

sequence.

To access this mode after entering values, press press + or - to scroll forward or backward through the entries.

Us e r 's GU i d e — 23

g =

. Then,

(cont'd)

While in the Paperless Tape mode, the display will show the previously entered or calculated value, along with the

sequential number of the entry (e.g., 01, 02, 03, etc.) and the math operator (+, –, x, ÷, %) in the upper left corner of the

display.

Note: If = has been used in the middle of a sequence, SUB (for Subtotal) will display in the upper left. If performed, the display will show TTL (Total) as the last entry.

To exit this mode, press = to exit and maintain the last entry

on the display. When exiting, the last entry (or TTL) will be

displayed, allowing you to continue using the last tape value for another operation, if desired.

Note: The Paperless Tape is cleared when you do one of the following:

is pressed twice

- upon a new calculation (new equation string is started)

- when the calculator is shut off.

Add a sequence of values and access Paperless Tape mode

to review your entries. Then, add another value to your total.

KEYSTROKE DI SPL AY

1. Add a sequence of values:

was the last operation

OO 4i+ 7i1/2+ 6i+ 3i3/4=

4 INCH

11-1/2 INCH

17-1/2 INCH

21-1/4 INCH

2. Access the Tape function:

24 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

TTL = 21-1/4 INCH

KEYSTROKE DI SPL AY

3. Scroll from rst value to total:

+ + + + +

4. Scroll last two values:

TTL = 21-1/4 INCH

5. Exit Tape function and add another value to your total:

TTL = 21-1/4 INCH

+ 3i1/2=

01 4 INCH

02+ 7-1/2 INCH

03+ 6 INCH

04+ 3-3/4 INCH

03+ 6 INCH

21-1/4 INCH

24-3/4 INCH

USING THE MACHINIST CALC/

MACHINIST CALC PRO

IM PORTA NT: All examples are based on the default U.S. units

mode, displaying entries and calculations in U.S. units. Also note

that if an attempt is made to nd a solution (using the Machinist

functions) without having stored the minimum required values, the calculation will not be performed. Instead, the currently stored value for the selected function will be displayed. See Key Denitions section for function requirements

cuTTINg SPEED

Cutting Speed is the speed of the workpiece surface relative

to the edge of the cutting tool during a cut, typically measured

in surface feet per minute. You can calculate Cutting Speed by entering the Diameter of the tool or material you’re using and the RPM (Spindle Speed).

(cont'd)

Us e r 's GU i d e — 25

(cont'd)

Cutting Speed – Milling

Calculate the Cutting Speed for a mill using a 1/2” tool running at 1,250 RPM (Spindle Speed):

KEYSTROKE DI SPL AY

1. Enter the Diameter of the tool:

1/2d

2. Enter the RPM:

1250R

3. Calculate the Cutting Speed:

C C C rC

* The calculated Cutting Speed is displayed as a rounded, whole

number value.

decimal oating point format.

Cutting Speed - Turning

displays the stored Cutting Speed value in

CUT 163.62462 FEET/MIN

DIA 0-1/2 INCH

RPM 1250.

CUT 164. FEET/MIN

DIA 0-1/2 INCH

RPM 1250.

Calculate the Cutting Speed when turning a four-inch rod at 300 RPM (Spindle Speed):

KEYSTROKE DI SPL AY

1. Enter the Diameter of the rod:

4id

2. Enter the RPM:

300R

3. Calculate the Cutting Speed:

* CUT 314. FEET/MIN

26 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

DIA 4 INCH

RPM 300.

* Repeated presses of C will toggle through the inputs and outputs, starting with the entered Diameter.

Cutting Speed - Drilling

Calculate the Cutting Speed using a 10.5 mm drill bit with the Spindle Speed set to 750 RPM:

KEYSTROKE DI SPL AY

1. Enter the Diameter of the hole to be drilled:

10.5md

2. Enter the RPM:

750R

3. Calculate the Cutting Speed:

* CUT 81. FEET/MIN

* Repeated presses of C will toggle through the inputs and outputs,

starting with the entered Diameter.

Cutting Speed – Using Metric Mode

If you know you’re going to be making your calculations in metric units, you can easily set your calculator to Metric Mode prior to entering values.

Calculate the Cutting Speed when using a #1 drill at 750 RPM (Spindle Speed):

KEYSTROKE DI SPL AY

DIA 10.5 MM

RPM 750.

1. Set calculator to Metric Mode:

gSSS+

2. Enter the Drill Size:

METRC UnITS

1 DRILL SIZE 0.2280 INCH

(cont'd)

Us e r 's GU i d e — 27

RPM

Diameter: ⅜″

(cont'd)

KEYSTROKE DI SPL AY

3. Store as the Diameter:

4. Enter the RPM:

750R

5. Calculate the Cutting Speed:

* CUT 14. M/MIN

6. Return calculator to U.S. Mode:

gSSS+

* Repeated presses of C will toggle through the inputs and outputs,

starting with the entered Diameter.

rPm (SPINDlE SPEED)

RPM is the rotational speed of the spindle in revolutions per

minute. In a milling machine or drill, the Spindle Speed is the

rotation of the attached cutting tool. In a turning machine, it is the rotation of the attached workpiece. RPM can be calculated

given values for Diameter and Cutting Speed.

RPM - Milling

DIA 0.228 INCH

RPM 750.

US UnITS

Calculate the Spindle Speed (RPM) when milling with a 3/8” bit at a Cutting Speed of 300 sfm (surface feet per minute):

28 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

KEYSTROKE DI SPL AY

1. Enter the bit Diameter:

3/8d

2. Enter the Cutting Speed:

300C

3. Calculate the Spindle Speed (RPM):

CUT 300. FEET/MIN

R R R rR

* The calculated RPM is displayed as a rounded, whole number value.

RPM - Turning

Calculate the Spindle Speed (RPM) needed to turn a piece with a 5” Diameter at a recommended Cutting Speed of 650 sfm:

KEYSTROKE DI SPL AY

* RPM 3055.7749

displays the stored RPM value in decimal oating point format

1. Enter the bit Diameter:

5id

2. Enter the Cutting Speed:

650C

3. Calculate the Spindle Speed (RPM):

* RPM 497.

* Repeated presses of starting with the entered Cutting Speed.

will toggle through the inputs and outputs,

DIA 0-3/8 INCH

RPM 3056.

CUT 300. FEET/MIN

DIA 0-3/8 INCH

DIA 5 INCH

CUT 650. FEET/MIN

Us e r 's GU i d e — 29

RPM - Drilling

Calculate what the RPM (Spindle Speed) should be set to when drilling into material with a recommended Cutting Speed of 90 sfm using a 5/8” bit:

KEYSTROKE DI SPL AY

1. Enter the Diameter:

5/8d

2. Enter the Cutting Speed:

90C

3. Calculate the RPM:

* Repeated presses of

starting with the entered Cutting Speed.

FEED PEr TOOTH (cHIP lOaD)

Feed per Tooth, or Chip Load, is the thickness of material removed by each cutting surface. You can calculate Feed per Tooth given values for Number of Teeth and Cutting Feed. If the Cutting Feed is not known, the Feed per Tooth can be calculated given values for Number of Teeth, Feed Rate and RPM (Spindle Speed).

CUT 90. FEET/MIN

* RPM 550.

will toggle through the inputs and outputs,

DIA 0-5/8 INCH

Feed per Tooth – Based on Cutting Feed and # of Teeth

Calculate Feed per Tooth (Chip Load) with a Cutting Feed of

0.024 Inches for 4 Teeth:

KEYSTROKE DI SPL AY

1. Enter the Cutting Feed:

.024c

30 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

CUT 0.024 INCH/REV

KEYSTROKE DI SPL AY

2. Enter the Number of Teeth:

3. Calculate the Feed per Tooth:

F F F

Feed per Tooth – Based on Feed Rate, RPM and # of Teeth

Calculate Feed per Tooth (Chip Load) with a 12.8 Inch per minute Feed Rate, 4 Teeth and a Spindle Speed of 800 RPM:

KEYSTROKE DISPLAY

CUT 0.024 INCH/REV

TEETH 4.

FPT 0.0060 INCH

TEETH 4.

1. Enter the Feed Rate:

12.8f

2. Enter the Number of Teeth:

3. Enter the Spindle Speed (RPM):

800R

4. Calculate the Feed per Tooth:

* FPT 0.0040 INCH

* Repeated presses of F will toggle through the inputs and outputs,

starting with the entered Number of Teeth.

FEED 12.8 INCH/MIN

TEETH 4.

RPM 800.

cuTTINg FEED

Cutting Feed is the distance the cutting tool or workpiece

advances during one revolution of the spindle, typically measured

in inches per revolution (IPR). You can calculate Cutting Feed given values for Feed per Tooth (Chip Load) and Number of Teeth. If these values are unknown, you can calculate Cutting Feed with Feed Rate and RPM (Spindle Speed).

Us e r 's GU i d e — 31

(cont'd)

Cutting Feed – Based on Feed per Tooth and # of Teeth

Calculate Cutting Feed with a Feed per Tooth (Chip Load) of

0.005 Inch and 4 Teeth:

KEYSTROKE DI SPL AY

1. Enter the Feed per Tooth:

.005F

2. Enter the Number of Teeth:

3. Calculate the Cutting Feed:

FPT 0.005 INCH

TEETH 4.

c CUT 0.0200 INCH/REV c

FPT 0.005 INCH

c TEETH 4.

Cutting Feed – Based on Feed Rate and RPM

Calculate a Cutting Feed using a 15-Inch Feed Rate and a Spindle Speed of 800 RPM:

KEYSTROKE DI SPL AY

1. Enter the Feed Rate:

15f

2. Enter the Spindle Speed (RPM):

800R

3. Calculate the Cutting Feed:

* CUT 0.0188 INCH/REV

* Repeated presses of c will toggle through the inputs and outputs, starting with the entered Feed Rate.

FEED 15. INCH/MIN

RPM 800.

32 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

FEED raTE

Feed Rate is the speed of the cutting tool’s movement relative

to the workpiece as the tool makes a cut. You can calculate

Feed Rate given values for Cutting Feed and RPM (Spindle Speed). If you don’t know the Cutting Feed, you can calculate Feed Rate with Feed per Tooth (Chip Load), Number of Teeth

and RPM.

Feed Rate – Based on Cutting Feed and RPM (for Turning)

Calculate the Feed Rate if you are turning a 1” steel round stock down with a Cutting Feed of 0.031 Inches per revolution and a rotational speed of 900 RPM (Spindle Speed):

KEYSTROKE DI SPL AY

1. Enter the Cutting Feed:

.031c

2. Enter the RPM:

900R

3. Calculate the Feed Rate:

f f f

Feed Rate – Based on Cutting Feed and RPM (for Drilling)

CUT 0.031 INCH/REV

RPM 900.

FEED 27.9000 INCH/MIN

RPM 900.

CUT 0.031 INCH/REV

Calculate the Feed Rate for a drilling operation that is using a recommended Cutting Feed of 0.004 Inches per revolution at 800 RPM (Spindle Speed):

(cont'd)

Us e r 's GU i d e — 33

RPM: 1000

Feed Rate

Feed per Tooth:

0.005″

Number of Teeth: 4

(cont'd)

KEYSTROKE DI SPL AY

1. Enter the Cutting Feed:

.004c

2. Enter the RPM:

800R

3. Calculate the Feed Rate:

* FEED 3.2000 INCH/MIN

* Repeated presses of f will toggle through the inputs and outputs,

starting with the entered RPM (Spindle Speed).

Feed Rate – Based on Feed per Tooth, RPM and # of Teeth

Calculate the Feed Rate for a four-uted end mill using a Feed per Tooth (Chip Load) of 0.005” turning at 1,000 RPM (Spindle Speed):

CUT 0.004 INCH/REV

RPM 800.

KEYSTROKE DI SPL AY

1. Enter the Feed per Tooth:

.005F

2. Enter the Number of Teeth:

3. Enter the RPM:

34 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

FPT 0.005 INCH

TEETH 4.

KEYSTROKE DI SPL AY

1000R

4. Calculate the Feed Rate:

* FEED 20.0000 INCH/MIN

* Repeated presses of f will toggle through the inputs and outputs,

starting with the entered RPM (Spindle Speed).

DrIll SIzES

The D key allows the selection of a desired Drill Size, which can be entered as a:

Numeric value (whole digits 1 through 97)



Letter between A and Z



Fractional or decimal Inch value (max. of 3-1/2”)



Millimeter value (max. of 78 mm).



The selected Drill Size is displayed along with its decimal Inch equivalent. If the entered value doesn’t match a Drill Size, the next smaller size is displayed. You can toggle through the available sizes in increasing order with either the D key or the + key. The

key displays the available sizes in decreasing order. To set the

displayed Drill Size, press O (or any other key).

Numeric Drill Size Entry

Enter a #36 Drill and toggle through the next larger available sizes:

KEYSTROKE DI SPL AY

1. Enter the Drill Size:

36D

2. Display the next larger available sizes:

D D

36 DRILL SIZE

2_75 MM DRILL SIZE

7/64 DRILL SIZE

35 DRILL SIZE

RPM 1000.

0.1065 INCH

0.1083 INCH

0.1094 INCH

0.1100 INCH

(cont'd)

Us e r 's GU i d e — 35

(cont'd)

* Repeated presses of D display the next larger Drill Sizes. The +

and

keys will toggle forward and backward, respectively, through all

available Drill Sizes.

Letter Drill Size Entry

You can enter letter Drill Sizes by selecting an alphabet character

via Alpha Mode ( desired letter can be selected by toggling through Alpha Mode until the letter is reached or by specifying the numerical order of the letter within the alphabet prior to entering Alpha Mode. Both methods are shown below.

Select Drill Size E by toggling though Alpha Mode. Then, select Drill Size G by entering the numerical order of the letter (the letter

G is 7th in the alphabet).

KEYSTROKE DI SPL AY

1. Enter Alpha Mode:

(Alpha)

2. Toggle until the letter E is displayed:

8888

3. Enter as Drill Size:

4. View next larger available sizes:

D D

* F DRILL SIZE

5. Enter order of letter G and enter Alpha Mode:

7g8

6. Enter as Drill Size:

(Alpha)

* G DRILL SIZE

) and then storing it using the D key. The

g 8

6_40

MM DRILL SIZE

6_50

MM DRILL SIZE

E DRILL SIZE

0.2500 INCH

0.2520 INCH

0.2559 INCH

0.2570 INCH

0.2610 INCH

ALPHA A

ALPHA E

ALPHA G

36 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

* Repeated presses of D display the next larger Drill Sizes. The

and - keys will toggle forward and backward, respectively, through all available Drill Sizes.

Inch Drill Size Entry

Enter hole sizes of 0.3”, 1” and 1-19/64”. After entering each size, toggle through the available sizes to view the next larger and next smaller sizes.

KEYSTROKE DI SPL AY

1. Enter the 0.3” hole size and view next larger and next smaller

sizes:

7_60

.3iD D

2. Enter the 1” hole size and view next larger and next smaller

sizes:

1iD D

3. Enter the 1-19/64” hole size and view next larger and next

smaller sizes:

1i19/64D D

* Note that even though the Drill Size is shown on the upper left of the

display without the whole inch value (e.g. 19/64 instead of 1-19/64),

the decimal inch equivalent reects the actual size.

MM DRILL SIZE

N DRILL SIZE

19/64 DRILL SIZE

1 DRILL SIZE

25_50 MM DRILL SIZE

63/64 DRILL SIZE

19/64 DRILL SIZE

33_00 MM DRILL SIZE 1.2992 INCH

9/32 DRILL SIZE 1

0.2992 INCH

0.3020 INCH

0.2969 INCH

1.0000 INCH

1.0039 INCH

0.9844 INCH

1.2969 INCH

.2813 INCH

Us e r 's GU i d e — 37

Millimeter Drill Size Entry

Enter a 5.7 mm hole size and toggle through the available sizes to view the next larger and next smaller sizes:

KEYSTROKE DISPLAY

1. Enter the hole size as millimeters:

5_70

5.7mD

2. View next larger and next smaller sizes:

DrIll POINT (NOT AVAILABLE ON MODEL 4086)

The Drill Point function calculates the Drill Point Cut Depth (length) of the stored Drill Size. By default, the calculation is based on a Cutting Angle of 118°. If a different Angle is desired, it can be stored using the Drill Point function (for example,

120gD

Find the Drill Point Cut Depth for a 1/2-Inch drill with a 118° Cutting Angle. Then, nd the Cut Depth using a 127° Angle.

KEYSTROKE DISPLAY

stores 120°).

MM DRILL SIZE

5_75

MM DRILL SIZE

DRILL SIZE

0.2244 INCH

0.2264 INCH

0.2210 INCH

1. Enter the Drill Size:

1/2

1/2D

2. Enter 118° Angle and calculate the Drill Point Cut Depth:

118gD

(Drill Point) DEPTH DRILL

DRILL SIZE

D ANGLE DRILL D

1/2

DRILL SIZE

0.5000 INCH

.0.1502 INCH

0.5000 INCH

118.°

3. Enter 127° angle and calculate the Drill Point cut length:

127gD

38 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

(Drill Point) DEPTH DRILL

0.1246 INCH

THrEaD SIzINg

Basic Thread Sizing

On both Machinist Calc and Machinist Calc Pro, the t

key

allows you to enter a numeric, fractional or metric Thread

Size and then toggle through the various available Thread

characteristics, as shown in the tables provided later in this section.

When using the t

key, the rst entry is considered the Thread Size. Upon entering the Thread Size, the Threads per Inch (TPI) or Pitch is required. If the entered Thread Size is a standard size, continuous presses of the t key will toggle through the available common TPI or Pitches. Once the desired TPI/Pitch is reached, pressing O stores the Thread Size. If the Thread Size you enter is not a standard size or if you have a non-common TPI/Pitch, you will need to directly enter the TPI/Pitch value, pressing t after entering it in order to store the Thread Size. Both of these entry methods are

covered in the examples provided within this section.

The following species the entry ranges that the calculator allows for the Thread Size and TPI/Pitch values for numeric, fractional and metric Thread Sizes:

Thread Size TPI/Pitch

Numeric 0, 1, 2, 3, 4, 5, 6,

less than 100

8, 10, 12, 14

Fractional 0.06” to 6” less than 100

Metric 1 mm to 300 mm less than or equal to 10

Note: Entries outside of the ranges mentioned above will result in an Entry Error.

(cont'd)

Us e r 's GU i d e — 39

(cont'd)

The following tables list the available Thread characteristics

provided by the Thread Size function on each model. Note that

Model 4087 has two separate listings, one for Internal Threads and one for External Threads. The listing shown within

the Thread Size function is determined by the set Thread Classication (see Thread Classication section).

Model 4086 (Internal Thread)

Thread Size

Cut Tap Drill Size*

Thread OD (Minimum Major Diameter)

Model 4087 (Internal Thread)

Thread Size Minimum Pitch Diameter

Cut Tap Drill Size* Maximum Pitch Diameter

Roll Tap Drill Size* Minimum Minor Diameter

Close Fit Drill Size* Maximum Minor Diameter

Free Fit Drill Size* Minimum Major Diameter

* If the resulting hole size is greater than 2 Inches or 50 mm, the actual

hole size will be displayed instead of adjusting to the closest Drill Size.

Model 4087 (External Thread)

Thread Size Minimum Pitch Diameter

Cut Rod Size Maximum Major Diameter

Roll Shank Size Minimum Major Diameter

Maximum Pitch Diameter Maximum Minor Diameter

Numeric Thread Size – Model 4086

Enter a # 8 screw and toggle through the available common Thread per Inch (TPI) values, store the selected Thread Size and

toggle through the available Thread characteristics:

40 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

KEYSTROKE DI SPL AY

1. Enter the Thread Size:

SIZE

8 –

8 – 32

8 – 36

8 – 32

2. Toggle through the common TPI values:

t t t

3. Clear the display and then recall the stored Thread Size:

* 0.

O t

4. Find the recommended Cutting Tap Hole Size (Cut Tap Drill

Size) and the Thread Outside Diameter (Minimum Major Diameter):

(Cut Tap Drill Size)

(Outside Diameter) OD SIZE 0.1640 INCH

* In addition to clearing the display, pressing O upon reaching the

desired TPI stores the displayed Thread Size.

You can also directly enter a Thread per Inch value instead of

toggling through the available ones. For this example, enter a number 6 screw with 32 TPI and toggle through the available

Thread characteristics.

THRED SIZE

TAP DRILL SIZE 29

KEYSTROKE DISPLAY

1. Enter the Thread Size:

2. Enter the TPI and store the nal Thread Size:

32t

THRED SIZE

Us e r 's GU i d e — 41

SIZE 6 –

6 – 32

(cont'd)

KEYSTROKE DI SPL AY

3. Find the recommended Cutting Tap Hole Size (Cut Tap Drill Size) and the Thread Outside Diameter (Minimum Major Diameter):

(Cut Tap Drill Size)

(Outside Diameter) OD SIZE 0.1380 INCH

* After entering the TPI value, the press of t is required in order to

store the entered Thread Size.

Fractional Thread Size – Model 4086

Enter a 1/2 Inch screw size and toggle through the available

common Threads per Inch (displayed in the upper-right corner of

the display) until 28 TPI is reached. Store the Thread Size and

toggle through the available Thread characteristics.

KEYSTROKE DISPLAY

TAP DRILL SIZE 36

1. Enter the Thread Size:

SIZE

1/2 –

1/2t

2. Toggle through the available common TPI values until 28 is displayed:

t t

t t t t t t t

THRED SIZE

1/2 – 12

1/2 – 13

1/2 – 14

1/2 – 16

1/2 – 18

1/2 – 20

1/2 – 24

1/2 – 27

1/2 – 28

INCH

42 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

KEYSTROKE DI SPL AY

3. Store selected Thread Size and nd the recommended

Cutting Tap Hole Size (Cut Tap Drill Size) and the Thread Outside Diameter (Minimum Major Diameter):

* 0.

O t

(Cut Tap Drill Size)

(Outside Diameter) OD SIZE 0.5000

* In addition to clearing the display, pressing O upon reaching the

desired TPI stores the displayed Thread Size.

You can also directly enter a Threads per Inch value instead of

toggling through the available ones. For this example, use a 3/8 Inch screw size with 16 TPI and toggle through the available

Thread characteristics.

KEYSTROKE DISPLAY

THRED

TAP DRILL SIZE 0-15/32

SIZE 1/2 –

INCH

1. Enter the Thread Size:

SIZE

3/8–

3/8t

2. Enter the TPI and store the nal Thread Size:

16t

3. Find the recommended Cutting Tap Hole Size (Cut Tap Drill Size) and the Thread Outside Diameter (Minimum Major Diameter):

t t

* After entering the TPI value, the press of t is required in order to

store the entered Thread Size.

Metric Thread Size – Model 4086

(Cut Tap Drill Size)

(Outside Diameter) OD SIZE 0.3750

THRED SIZE

TAP DRILL SIZE 0 - 5/16

INCH

3/8–16 INCH

INCH

Enter a 2 mm screw size and toggle through the available common Thread Pitches until 0.4 is reached. Store the Thread Size and toggle through the available Thread characteristics.

(cont'd)

Us e r 's GU i d e — 43

(cont'd)

KEYSTROKE DISPLAY

1. Enter the Thread Size:

2mt

2. Toggle through the available common Thread Pitches:

t t

3. Clear the display and then recall the stored Thread Size:

* 0.

O t

4. Find the recommended Cutting Tap Hole Size (Cut Tap Drill Size) and the Thread Outside Diameter (Minimum Major Diameter):

(Cut Tap Drill Size)

(Outside Diameter) OD SIZE 2.0000 MM

* In addition to clearing the display, pressing O upon reaching the

desired Pitch stores the displayed Thread Size.

You can also directly enter a Thread Pitch instead of toggling

through the available ones. For this example, use an 8 mm screw size with a Pitch of 0.75 mm and toggle through the

available Thread characteristics.

KEYSTROKE DI SPL AY

THRED SIZE

TAP DRILL SIZE 1.6 MM

SIZE 2.

2. – 0.25

–

2. – 0.4

1. Enter the Thread Size:

SIZE 8.

8mt

2. Enter the Thread Pitch and store the nal Thread Size:

0.75t

THRED SIZE

–

8. – 0.75

44 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

KEYSTROKE DI SPL AY

3. Find the recommended Cutting Tap Hole Size (Cut Tap Drill Size) and the Thread Outside Diameter (Minimum Major Diameter).

Cut Tap Drill Size)

(Outside Diameter) OD SIZE 8.0000 MM

* After entering the Pitch value, the press of t is required in order to store the entered Thread Size.

TAP DRILL SIZE 7.25 MM

Thread Classication (NOT AVAILABLE ON MODEL 4086)

The Machinist Calc Pro provides additional outputs and gives you the choice between Internal and External Threads. Entering

a U.S. Thread Size will allow you to choose among U.S. Thread

Classes as shown below.

Thread Type U.S. Thread Classes

Internal 1B 2B* 3B

External 1A 2A 3A

Entering a Metric Thread will allow you to choose among Metric Thread Tolerance Classes as shown below.

Thread Type Metric Thread Tolerance Classes

Internal

External

3G3H4G4H5G5H6G

6H*7G7H8G8H9G9H

5g 5h 5e

6h 6e

3g 3h 3e

4g 4h

8g 8h 8e

9g 9h 9e

* Default settings

Changing Thread Classes

To display the current Thread Classication, press

Repeated presses of b will toggle between External and Internal Thread Types. You can change the number of a

Thread Class by entering the number of the desired class/

grade and pressing

Us e r 's GU i d e — 45

Changing a U.S. Thread Classication

KEYSTROKE DI SPL AY

1. Recall the current Thread Classication:

2. Change to U.S. External Thread Class 2:

3. Change to U.S. External Thread Class 1:

1gb

4. Change to U.S. Internal Thread Class 1:

Changing a Metric Thread Classication

Changing a Metric Thread Tolerance Class is done in the same manner, with several selections available for Internal and External Threads.

KEYSTROKE DI SPL AY

(Thread Class)

1. Enter a Tolerance Grade of 4:

4gb

2. Toggle through the available Tolerance Positions for the entered Grade:

(Thread Class)

ALL CLEArEd

INT 2B

EXT 2A

EXT 1A

INT 1B

ALL CLEArEd

INT MM 4H

b EXT MM 4G b EXT MM 4H b EXT MM 4E b EXT MM 4F b INT MM 4G b INT MM 4H

46 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

KEYSTROKE DI SPL AY

3. Enter a Tolerance Grade of 6 and toggle through the available Tolerance Positions for the entered Grade:

6gb

(Thread Class)

b b

* EXT MM 6E

* Repeated presses of b will continue to toggle through the available

Tolerance Positions of the specied Grade.

Note: The number 3 can be entered to select both U.S. and Metric classes. If no Thread Size is stored when accessing the Thread

Classication function, the U.S. Class will always be displayed. In order

to select a Tolerance Class with a Grade of 3 for a Metric Thread Size, the Metric Thread Size must be stored prior to accessing the Thread

Classication function.

Numeric Thread Size – Model 4087

Enter an 8-32 screw and toggle through the available Internal

Thread (Class 2B) characteristics, then switch to External Thread (Class 2A) and toggle through the available Thread characteristics.

Note: The default U.S. Thread Class is 2B (Internal). To view the current Thread Class, press

Thread Size calculations for Pitch, Major, and Minor Diameter attributes are compliant with ANSI/ASME B.1.1-2003 and ANSI/ASME B.1.1.3 M -2 0 05 .

. To change the class, press b again.

INT MM 6H

EXT MM 6G

EXT MM 6H

KEYSTROKE DI SPL AY

1. Verify Thread Class is set to 2B:

2. Enter the Thread Size:

(Thread Class)

ALL CLEArEd

INT 2B

SIZE 8 –

(cont'd)

Us e r 's GU i d e — 47

KEYSTROKE DI SPL AY

3. Enter the TPI and store the nal Thread Size:

32t

4. Find the available Internal Thread characteristics:

(Cut Tap Drill Size)

(Roll Tap Drill Size)

(Close Fit Drill Size) CLOSE DRILL SIZE 18

(Free Fit Drill Size) FREE DRILL SIZE 16

(Min. Internal Pitch Diameter) PTCH- SIZE 0.1437 INCH

(Max. Internal Pitch Diameter) PTCH+ SIZE 0.1475 INCH

(Min. Internal Minor Diameter) MINR- SIZE 0.1300 INCH

(Max. Internal Minor Diameter) MINR+ SIZE 0.1390 INCH

(Min. Internal Major Diameter)

5. Switch to Thread Class 2A and nd the available External

Thread characteristics:

gbb

(Thread Class) EXT 2A

(Rod Size for thread cutting) ROD SIZE 0.1640 INCH

(Rod Size for cold forming) CFORM SIZE 0.1450 INCH

(Max. External Pitch Diameter) PTCH+ SIZE 0.1428 INCH

(Min. External Pitch Diameter) PTCH- SIZE 0.1399 INCH

(Max. External Major Diameter) MAJR+ SIZE 0.1631 INCH

(Min. External Major Diameter) MAJR- SIZE 0.1571 INCH

(Max. External Minor Diameter) MINR+ SIZE 0.1259 INCH

Fractional Thread Size – Model 4087

THRED SIZE 8 – 32

TAP DRILL SIZE 29

R-TAP DRILL SIZE 3.75 MM

MAJR- SIZE 0.1640 INCH

THRED SIZE

8 –

Find the available Internal and External Thread characteristics for a 1/4 Inch, 28 TPI screw.

48 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

KEYSTROKE DI SPL AY

1. Verify Thread Class is set to 2B:

2. Enter the Thread Size:

(Thread Class) INT 2B

1/4t

3. Enter the TPI and store the nal Thread Size:

28t

4. Find the available Internal Thread characteristics:

(Cut Tap Drill Size) TAP DRILL SIZE 3

(Roll Tap Drill Size)

(Close Fit Drill Size)

(Free Fit Drill Size)

(Min. Internal Pitch Diameter)

(Max. Internal Pitch Diameter)

(Min. Internal Minor Diameter)

(Max. Internal Minor Diameter)

(Min. Internal Major Diameter)

5. Switch to Thread Class 2A and nd the available External

Thread characteristics:

gbb

(Thread Class) EXT 2A

(Rod Size for Thread Cutting) ROD SIZE 0.2500 INCH

(Rod Size for Cold Forming) CFORM SIZE 0.2283 INCH

(Max. External Pitch Diameter)

(Min. External Pitch Diameter)

(Max. External Major Diameter)

(Min. External Major Diameter)

(Max. External Minor Diameter)

THRED SIZE 1/4 – 28 INCH

R-TAP DRILL SIZE 5.9 MM

PTCH- SIZE 0.2268 INCH

PTCH+ SIZE 0.2311 INCH

MINR- SIZE 0.2110 INCH

MINR+ SIZE 0.2200 INCH

MAJR- SIZE 0.2500 INCH

THRED SIZE 1/4 – 28 INCH

PTCH+ SIZE 0.2258 INCH

PTCH- SIZE 0.2225 INCH

MAJR+ SIZE 0.2490 INCH

MAJR- SIZE 0.2425 INCH

MINR+ SIZE 0.2065 INCH

ALL CLEArEd

SIZE

1/4 –

INCH

CLOSE DRILL SIZE F

FREE DRILL SIZE H

Us e r 's GU i d e — 49

Metric Thread Size – Model 4087

Find the available Internal and External Thread characteristics for a 5 mm, 0.75 mm Pitch screw with a Tolerance Class of 4H.

Note: The default Metric Tolerance Class is 6H (Internal). To view the current Tolerance Class, press Thread Size. To change the class, press

KEYSTROKE D I SPLAY

1. Set Tolerance Class to Internal 4H:

4gb

2. Enter the Thread Size:

(Thread Class) INT MM 4H

5mt

3. Enter the Thread Pitch and store the nal Thread Size:

0.75t

4. Find the available Internal Thread characteristics:

(Cut Tap Drill Size)

(Roll Tap Drill Size)

(Close Fit Drill Size)

(Free Fit Drill Size)

(Min. Internal Pitch Diameter)

(Max. Internal Pitch Diameter)

(Min. Internal Minor Diameter)

(Max. Internal Minor Diameter)

(Min.Internal Major Diameter)

5. Switch to External 4g Tolerance Class and nd the available

External Thread characteristics:

gbb

(Thread Class)

after entering the desired Metric

again.

THRED SIZE 5. – 0.75 MM

TAP DRILL SIZE 4.25 MM

R-TAP DRILL SIZE 14

CLOSE DRILL SIZE 5.3 MM

FREE DRILL SIZE 5.8 MM

PTCH- SIZE 4.5130 MM

PTCH+ SIZE 4.5605 MM

MINR- SIZE 4.1880 MM

MINR+ SIZE 4.3060 MM

MAJR- SIZE 5.0000 MM

ALL CLEArEd

SIZE 5. – MM

EXT MM 4G

(Rod Size for Thread Cutting)

50 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

THRED SIZE 5. – 0.75 MM

ROD SIZE 5.0000 MM

KEYSTROKE DI SPL AY

(Rod Size for Cold Forming)

(Max. External Pitch Diameter)

(Min. External Pitch Diameter)

(Max. External Major Diameter)

(Min. External Major Diameter)

(Max. External Minor Diameter)

Custom Thread Percentage (NOT AVAILABLE ON MODEL 4086)

The Machinist Calc and Machinist Calc Pro use a default

Thread Grip Percentage of 75% when calculating Tap Drill sizes. With the custom Percentage Thread function on the

Machinist Calc Pro, you can enter a different value to calculate

Tap Drill sizes.

Calculate the Tap Drill Size for a 1/4 Inch, 26 TPI screw, then change the Thread Grip Percentage to 50% and calculate the new Tap Drill Size.

KEYSTROKE DI SPL AY

1. Enter the Thread Size and calculate the Cut Tap and Roll Tap Drill Sizes:

1/4t 26t

(Cut Tap Drill Size)

* (Roll Tap Drill Size)

2. C

hange the Thread Grip Percentage to 50% and calculate

the new Cut Tap and Roll Tap Drill Sizes:

50gt

(% Thread)

(Cut Tap Drill Size)

* (Roll Tap Drill Size)

CFORM SIZE 4.5433 MM

PTCH+ SIZE 4.4910 MM

PTCH- SIZE 4.4350 MM

MAJR+ SIZE 4.9780 MM

MAJR- SIZE 4.8880 MM

MINR+ SIZE 4.1660 MM

ALL CLEArEd

SIZE 1/4 – INCH

THRED SIZE 1/4 – 26 INCH

TAP DRILL SIZE 3

R-TAP DRILL SIZE 5.9 MM

THRD% SIZE 50.

THRED SIZE 1/4 – 26 INCH

TAP DRILL SIZE 1

R-TAP DRILL SIZE 6. MM

(cont'd)

Us e r 's GU i d e — 51

(cont'd)

* Repeated presses of t will toggle through the inputs and outputs, starting with the Close Fit Drill Size.

WIrE SIzES aND 3-WIrE mEaSurEmENTS

(NOT AVAILABLE ON MODEL 4086)

Wire Size

If you know your Thread Size, you can nd the Best (Ideal), Maximum and Minimum Wire Sizes you can use for that size Screw Thread.

Find the Ideal (Best), Maximum and Minimum Wire Sizes for measuring a 3/8 Inch Thread with 16 Threads per Inch:

KEYSTROKE DI SPL AY

1. Enter the Thread Size:

SIZE

SIZE 3/8

3/8t

2. Enter the Threads per Inch and store the nal Thread Size:

16t

3. Find the Ideal (Best), Maximum and Minimum Wire Sizes:

(Wire Size) BEST SIZE 0.0361

THRED

f MAX SIZE 0.0563

3-Wire Measurement – Known Thread Size and Wire Size

MIN SIZE 0.0350

3/8

– 16 INCH

–

INCH

You can nd the 3-Wire Measurement as well as the Pitch Diameter if you know the Thread Size and the Wire Size you

want to use.

Note: When solving for 3-Wire Measurement and Pitch Diameter,

the Thread Classication must be set to an External Thread Type.

Otherwise, no solutions will be provided when set to an Internal Thread Type.

52 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

Find the maximum allowable 3-Wire Measurement and Pitch Diameter for a 3/8 – 16, Class 2A (External) screw using 0.040

Inch wire:

KEYSTROKE DI SPL AY

–

INCH

1. Enter the Thread Size:

3/8

2. Enter the Threads per Inch and store the nal Thread Size:

16t

3. Set the Thread Class to 2A:

2gb

* If necessary, continue pressing b until the desired External Thread

Class is displayed.

4. Enter the Wire Size**:

.04gf

5. Find the Maximum 3-Wire Measurement:

6. Find the Pitch Diameter:

R R

** If no Wire Size is entered, the calculated Best (Ideal) Wire Size will be

used to nd the 3-Wire Measurement.

THRED

* (Thread Class) EXT 2A

(Wire Size)

(3-W Measure) 3WIRE

WIRE

P-DIA

WIRE

SIZE 3/8

SIZE

3/8

– 16 INCH

SIZE

0.04 INCH

SIZE 0.3990 INCH

SIZE 0.3331 INCH

SIZE

0.04 INCH

Pitch Diameter – Known 3-Wire Measurement and Wire Size

You can also nd the measured Pitch Diameter if you know the 3-Wire Measurement and the Wire Size used to obtain the

measurement.

(cont'd)

Us e r 's GU i d e — 53

(cont'd)

Find the Pitch Diameter of a 3/8-16, Class 2A (External) screw with a 3-Wire Measurement of 0.3975 Inches obtained using a

0.040 Inch wire:

KEYSTROKE DISP LAY

1. Enter the Thread Size:

3/8

2. Enter the Threads per Inch and store the nal Thread Size:

16t

3. Enter the Wire Size*:

.04gf

4. Enter the 3-Wire Measurement:

(Wire Size)

THRED

WIRE

SIZE 3/8

SIZE

3/8

– 16 INCH

0.04 INCH

–

INCH

.3975gR

(3-W Measure)

5. Find the Pitch Diameter:

R P-DIA R WIRE

* If no Wire Size is entered, the calculated Best (Ideal) Wire Size will

be used to nd the Pitch Diameter.

BOlT PaTTErN

With the Machinist Calc and Machinist Calc Pro, you can

determine a Bolt Pattern by entering the Bolt Circle Diameter, the Number of Bolt Holes and the Angle of the rst bolt hole

(optional). The Machinist Calc Pro offers the added ability to enter an optional Center x and y-coordinate of the Bolt Pattern.

In addition to calculating the x and y-coordinates for each bolt hole, the Bolt Pattern function also calculates the hole center-tocenter spacing (i.e. on-center distance from hole to hole).

54 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

3WIRE

SIZE

0.3975 INCH

SIZE 0.3316 INCH

SIZE

0.04 INCH

Start Angle

C,YC

X2,Y

X1,Y

X3,Y

Bolt Pattern – Model 4086

Calculate the Bolt Pattern for a layout with a 4.5 Inch Diameter, a 30° Start Angle and 6 Bolts.

Note: When determining angles, 0° is at the 3 o’clock position and the rotation goes counterclockwise.

KEYSTROKE DISPLAY

1. Enter the Angle of the rst bolt hole:

30gb

2. Enter the Bolt Circle Diameter:

4.5id

3. Enter the Number of Bolts:

(Start Angle) ANGLE

DIA

4. Calculate the hole Center-to-Center Spacing and the x and y coordinates:

(Center-to-Center Spacing) OC-OC 2.2500 INCH

X-01 1.9486 INCH

b b b b

Y- 01 1.1250 INCH

X-02 0.0000 INCH

Y- 02 2.2500 INCH

4.5

BOLTS

30.°

INCH

(cont'd)

Us e r 's GU i d e — 55

(cont'd)

KEYSTROKE DI SPL AY

b b b b b b b b b b

Bolt Pattern – Model 4087

Calculate the Bolt Pattern for a layout with a 3.5 Inch Diameter, a 20° Start Angle and 3 Bolts. The Center x-coordinate is 10 inches

and the center y-coordinate is 15 inches.

Note: When determining angles, 0° is at the 3 o’clock position and the rotation goes counterclockwise.

KEYSTROKE DI SPL AY

X-03 - 1.9486 INCH

Y- 03 1.1250 INCH

X-04 - 1.9486 INCH

Y- 04 - 1.1250 INCH

X-05 0.0000 INCH

Y- 05 - 2.2500 INCH

X-06 1.9486 INCH

Y- 06 - 1.1250 INCH

DIA

4.5

INCH

ANGLE

30°

1. Enter the Center x-coordinate:

ADJ

10ia

2. Enter the Center y-coordinate:

15ip

3. Enter the Start Angle:

20n

4. Enter Bolt Circle Diameter:

3.5id

5. Enter the Number of Bolts:

OPP

ANGLE

DIA

10 INCH

15 INCH

3.5 INCH

BOLTS

20.°

56 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

Opposite Leg: 4

Hypotenuse

Adjacent Leg: 3

KEYSTROKE DI SPL AY

6. Calculate Center-to-Center Spacing and the x and y

coordinates:

(Center-to-Center Spacing) OC-OC 3.0311 INCH

b b b b b b b b b b b

rIgHT TrIaNglE FuNcTIONS

With the Machinist Calc Pro, you can easily solve Right Triangle

problems by simply entering two of four variables: Adjacent, Opposite, Hypotenuse or Angle.

Right Triangle – Based on Adjacent and Opposite Legs

(NOT AVAILABLE ON MODEL 4086)

X-01 11.6445 INCH

Y- 01 15.5985 INCH

X-02 8.6594 INCH

Y- 02 16.1249 INCH

X-03 9.6961 INCH

Y- 03 13.2766 INCH

DIA

3.5

INCH

Xoc

10 INCH

Yoc

15 INCH

ANGLE

20°

Calculate the Hypotenuse, Angle and Adjacent Angle of a right triangle with an Adjacent Leg of 3 Inches and an Opposite Leg of 4 Inches:

(cont'd)

Us e r 's GU i d e — 57

(cont'd)

KEYSTROKE DISPLAY

1. Enter the Adjacent Leg length:

3ia

2. Enter the Opposite Leg length:

4ip

3. Solve for the Hypotenuse:

4. Solve for the Angle:

5. Solve for the Adjacent Angle:

ANGLE 53.130102°

Right Triangle – Based on Hypotenuse and Angle

Calculate the Adjacent Angle, Adjacent Leg and Opposite Leg of a right triangle with a Hypotenuse of 12 Inches and a known Angle of 35.34°:

KEYSTROKE DISPLAY

ADJ 3. INCH

OPP 4. INCH

HYP 5 INCH

ADJ<Ø 36.8699°

1. Enter the Hypotenuse:

12ih

2 Enter the known Angle:

35.34n

3. Solve for the Adjacent Angle:

4. Solve for the Adjacent Leg:

5. Solve for the Opposite Leg:

58 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

HYP

ANGLE 35.34°

ADJ<Ø 54.6600°

ADJ 9-25/32 INCH

OPP 6-15/16 INCH

12.

INCH

cIrclE calculaTIONS

Circumference and Area – Based on Diameter

Find the Area, Circumference and Radius of a circle with a Diameter of 11 Inches:

KEYSTROKE DI SPL AY

DIA

11id d d gd

Circumference and Area – Based on Radius

(NOT AVAILABLE ON MODEL 4086)

Find the Diameter, Area and Circumference of a circle with a Radius of 3-1/4”:

KEYSTROKE DI SPL AY

(Radius) RAD

AREA 95.0332 SQ INCH

CIRC 34-9/16 INCH

11 INCH

5-1/2 INCH

OO 3i1/4gd

(Radius) RAD

d d d

BaSIc D:m:S aND TrIgONOmETrY ExamPlES

AREA 33.1831 SQ INCH

CIRC 20-27/64 INCH

DIA

3-1/4 INCH

6-1/2 INCH

Converting Degrees:Minutes:Seconds

Convert 23° 42’ 39” to decimal degrees:

KEYSTROKE D ISP L AY

23.42.39

(dms◄►deg) 23.710833°

DMS 23.42.39

(cont'd)

Us e r 's GU i d e — 59

(cont'd)

Convert 44.29° to degrees:minutes:seconds format:

KEYSTROKE DISPL AY

44.29g.

Note: Improperly formatted entries will be redisplayed in the correct convention after any operator key is pressed. For example, 30° 89’ entered will be corrected and displayed as 31° 29’ 0” or 31.483333°.

Time Calculations Using D:M:S

Add 7 Hours 45 Minutes 33 Seconds to 11 Hours 16 Minutes 20 Seconds:

KEYSTROKE DISPL AY

(dms◄►deg) DMS 44.17.24°

7.45.33+

11.16.20=

Trigonometric Functions (NOT AVAILABLE ON MODEL 4086)

Trigonometric functions are available on the Machinist Calc Pro calculator.

The following drawing and formulas list basic trigonometric formulas, for your reference:

DMS 7.45.33°

DMS 19.01.53°

60 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

Given side A and angle a, nd:

Side C A , a

(e.g.,

3i,53.13gF

Side B A * a

Angle b 90° - a

Given side A and angle b, nd:

Side B A , b

Side C A , b

Angle a 90° - b

Given side B and angle a, nd:

Side A B , a

Side C B , a

Given side C and angle a, nd:

Side A C * a

Side B C * a

Given side A and side C, nd:

Angle a A , C

Angle b A , C

Given side B and angle b, nd:

Side C B

Side A B * b

gc g#

gF g#

=gp =ga

gF gc

(Cos)

(Tan)

(Sine)

(Tan)

(Sine)

(Cos)

(Sine)

(ArcCos)

(ArcSine)

(Cos)

(Tan)

(Cos)=)

Us e r 's GU i d e — 61

APPENDIX A – DEFAULT SETTINGS

After a Clear All ( ing settings:

STORED VALUES DEFAULT VALUE

Number of Teeth 1.

Drill Point Angle 118°

Weight per Volume 490 pounds per cubic foot

MODEL 4087 ONLY:

% Thread 75%

Thread Classication

Metric Threads Internal 6H

If you replace your batteries or perform a Full Reset* (press

, hold down * and press

the following settings (in addition to those listed above):

PREFERENCE SETTINGS DEFAULT VALUE

Fractional Resolution 1/64”

Functional Result Rounding 0.0000

Default Unit Format US

Area Answer Format Standard

Volume Answer Format Standard

Fractional Mode Standard

Mathematical Operation Order of Operations Method

), your calculator will return to the follow-

g *

US Threads Internal 2B

) your calculator will return to

* Depressing the Reset button located above the C key will also perform a Full Reset.

62 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

APPENDIX B – PREFERENCE SETTINGS

The Machinist Calc and Machinist Calc Pro have Preference Settings that allow you to customize or set desired unit formats and calculations. If you replace your batteries or perform a Full Reset*

(press o, hold down *, and press O), your calculator will return to the following settings (in addition to those listed on the previous

page), with the default setting for each preference listed rst:

* Depressing the Reset button located above the C key will also perform a Full Reset.

PREFERENCE OPTIONS

1) Fractional

Resolution

– 1/64: displays fractional values to the near-

est 64th of an Inch.

– 1/2: displays fractional values to the nearest

half Inch.

– 1/4: displays fractional values to the nearest

quarter of an Inch.

– 1/8: displays fractional values to the nearest

8th of an Inch.

– 1/16: displays fractional values to the near-

est 16th of an Inch.

– 1/32: displays fractional values to the near-

est 32nd of an Inch.

2) Functional

Result Rounding

– 0.0000: calculation results using Machin-

ist functions are displayed to four decimal places.

– 0.000: calculation results using Machinist

functions are displayed to three decimal places.

– FLOAT: calculation results using Machinist

functions are always displayed to the maximum number of decimal places.

(cont'd)

Us e r 's GU i d e — 63

(cont'd)

3) Default Unit Format

4) Area Answer

Format

– US: unitless values stored within Machinist

functions are automatically assigned the

corresponding default U.S. units of the

selected function.

– METRIC: unitless values stored within

the Machinist functions are automatically assigned the corresponding default Metric units of the selected function.

– Standard: if units entered are the same

– e.g., Feet x Feet – area answers will remain in this format (Square Feet), but if units entered are different – e.g., Inches x Feet – area answers will be displayed in Square Feet.

– Square Feet: area answers always

displayed in Square Feet, regardless of unit entry – e.g., Inches x Inches = Square Feet.

– Square Inches: area answers always

displayed in Square Inches, regardless of unit entry – e.g., Feet x Feet = Square

Inches.

– Square Meters: area answers always

displayed in Square Meters, regardless of unit entry – e.g., Feet x Feet = Square

Meters.

64 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o

5) Volume Answer

Format

– Standard: if units entered are the same – e.g., Feet x Feet x Feet – the answer will remain in this format (Cubic Feet), but if units entered are different – e.g., Feet x Feet x Inches – volume answer will be displayed in Cubic Feet. – Cubic Feet: volume answers always displayed in Cubic Feet, regardless of unit entry – e.g., Inches x Inches x Inches = Cubic Feet. – Cubic Meters: volume answers always

displayed in Cubic Meters, regardless of

unit entry – e.g., Feet x Feet x Feet = Cubic

Meters. – Cubic Inches: volume answers always displayed in Cubic Inches, regardless of

unit entry – e.g., Feet x Feet x Feet = Cubic

Inches.

6) Fractional

Mode

7) Mathematical

Operation

– Standard: fractions are displayed to the

nearest fraction.

– Constant: fractions are displayed in the set Fractional Resolution.

– Order: the calculator uses the Order of Operations Method (10 + 4 x 5 = 30). – Chain: the calculator uses the Chaining Method (as entered: 10 + 4 x 5 = 70).

Us e r 's GU i d e — 65

APPENDIX C – CARE INSTRUCTIONS

Please follow the guidelines listed in this section for proper care

and operation of your calculator. Not following the instructions

listed below may result in damage not covered by your warranty. Refer to the WARRANTY section on page 69 for more details.

Do not expose calculator to temperatures outside the operating temperature range of 32ºF – 104ºF (0ºC – 40ºC).

Do not expose calculator to high moisture such as submersion in water, heavy rain, etc.

APPENDIX D –

ACCURACY/ERRORS, AUTO SHUT-OFF, BATTERIES, RESET

accuracY/ErrOrS

Accuracy/Display Capacity — Your calculator has a twelve-digit display made up of eight digits (normal display) and four fractional digits. You may enter or calculate values up to 99,999,999.99. Each calculation is carried out internally to 12 digits.

E r r o r s — When an incorrect entry is made, or the answer is beyond the range of the calculator, an error message will display. To clear an error condition you must press the once. At this point, you must determine what caused the error and re-key the problem.



key

Error Codes

DI SPL AY ERROR TYPE

OFLO Overflow (too large)

MATH Error Divide by 0

DIM Error Dimension error

ENT Error Invalid entry error

NONE Attempt to access cleared

Thread Size or Drill Size Value

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Auto-Range — If an “overflow” is created because of an

input and calculation with small units that are out of the standard eight-digit range of the display, the answer will be automatically expressed in the next larger units (instead of showing “OFLO”) — e.g., 200,000,000 mm is shown as 200,000 m. Also applies to inches and feet.

auTO SHuT-OFF

Your calculator is designed to shut itself off after about 8-12 minutes of non-use.

BaTTErIES

T h e Machinist Calc and Machinist Calc Pro use two LR-44 batteries. Should your calculator display become very dim or erratic, replace the batteries.

Note: Please use caution when disposing of your old batteries, as they contain hazardous chemicals.

Replacement batteries are available at most discount or electronics stores. You may also call Calculated Industries at

1-775-885- 4900.

Battery Replacement Instructions

To replace the batteries, slide open the battery door (at top backside of unit) and replace with new batteries. Make sure the batteries are facing positive side up.

rESET

If your calculator should ever “lock up,” press Reset – a small

hole located above the C key – to perform a total reset.

Us e r 's GU i d e — 67

REPAIR AND RETURN

rETurN guIDElINES

Please read the Warranty in this User’s Guide to determine if your Calculated Industries product remains under warranty before calling or returning any device for evaluation or repairs.

If your product won’t turn on, check the batteries as outlined in the User’s Guide.

If you need more assistance, please go to the website listed below.

If you believe you need to return your product, please call a Calculated Industries representative between the

hours of 7:00am to 4:30pm Pacific Time for additional information and a Return Merchandise Authorization

(RMA).

Call Toll Free: 1-800-854-8075

Outside USA: 1-775-885-4900

www.calculated.com/warranty

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WARRANTY

Warranty Repair Service – U.S.A.

Calculated Industries (“CI”) warrants this product against defects in materials and workmanship for a period of one (1) year from the date of original consumer purchase in the U.S. If a defect exists

during the warranty period, CI at its option will either repair (using new or remanufactured parts) or replace (with a new or remanufactured calculator) the product at no charge.

THE WARR ANTY WILL NOT APPLY TO THE PRODUCT IF IT HAS BEEN DAMAGED BY MISUSE, ALTERATION, ACCIDENT, IMPROPER HANDLING OR OPERATION, OR IF UNAUTHORIZED REPAIRS ARE ATTEMPTED OR MADE. SOME EXAMPLES OF DAMAGES NOT COVERED BY WARRANTY INCLUDE, BUT ARE NOT LIMITED TO, BATTERY LEAKAGE, BENDING, SPOT” OR VISIBLE CRACKING OF THE LCD, WHICH ARE PRESUMED TO BE DAMAGES RESULTING FROM MISUSE OR ABUSE.

To obtain warranty service in the U.S., please go to the website.

A repaired or replacement product assumes the remaining warranty of the original product or 90 days, whichever is longer.

Non-Warranty Repair Service – U.S.A.

Non-warranty repair covers service beyond the warranty period, or service requested due to damage resulting from misuse or abuse.

Contact Calculated Industries at the number listed above to obtain current product repair information and charges. Repairs are guaranteed for 90 days.

A BLACK “INK

Repair Service – Outside the U.S.A.

To obtain warranty or non-warranty repair service for goods

purchased outside the U.S., contact the dealer through which you

initially purchased the product. If you cannot reasonably have the product repaired in your area, you may contact CI to obtain current product repair information and charges, including freight and duties.

Us e r 's GU i d e — 69

Disclaimer

CI MAKES NO WARRANTY OR REPRESENTATION, EITHER EXPRESS OR IMPLIED, WITH RESPECT TO THE PRODUCT’S QUALITY, PERFORMANCE, MERCHANTABILITY, OR FITNESS

FOR A PARTICULAR PURPOSE. AS A RESULT, THIS PRODUCT, INCLUDING BUT NOT LIMITED TO, KEYSTROKE PROCEDURES, MATHEMATICAL ACCURACY AND PREPROGRAMMED MATERIAL, IS SOLD “AS IS,” AND YOU THE PURCHASER ASSUME THE ENTIRE RISK AS TO ITS QUALIT Y AND PERFORMANCE.

IN NO EVENT WILL CI BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY DEFECT IN THE PRODUCT OR ITS DOCUMENTATION.

The warranty, disclaimer, and remedies set forth above are exclusive

and replace all others, oral or written, expressed or implied. No CI dealer, agent, or employee is authorized to make any modification,

extension, or addition to this warranty.

Some states do not allow the exclusion or limitation of implied warranties or liability for incidental or consequential damages, so the

above limitation or exclusion may not apply to you. This warranty gives you specific rights, and you may also have other rights, which vary from state to state.

FCC Class B

This equipment has been certified to comply with the limits for a Class B calculating device, pursuant to Subpart J of Part 15 of FCC rules.

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Legal Notes

Software copyrighted and licensed to Calculated Industries by Specialty Calculator Technologies, LLC, 2010.

User’s Guide copyrighted by Calculated Industries, Inc., 2010. Machinist Calc™ and Machinist Calc™ Pro are trademarks and Calculated Industries® is a registered trademark of Calculated Industries, Inc. © 2010.

Designed in the U.S.A.

Looking for New Ideas

Calculated Industries, a leading manufacturer of specialfunction calculators and digital measuring instruments, is always looking for new product ideas in these areas.

If you have a new product idea, please visit our "Bright Idea"

page at www.calculated.com/brightidea.asp. For suggestions

about improving this product or other products, please visit us at www.calculated.com under "Contact Us". Thank You.

Us e r 's GU i d e — 71

4840 Hytech Drive

Carson City, NV 89706 U.S.A.

1-800-854-8075 • Fax: 1-775-885-4949

E-mail: info@calculated.com

www.calculated.com

Calculated Industries Machinist Calc 4086, Machinist Calc Pro 4087 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual