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

O

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

o

+-*
,=

0-9

and

.

g

S

S

1 - 9

r

gr

M

gM

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

m

g5

g9

g7

i

/

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

B

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

g6

g4

g3

g2

g1

g0

Trigonometric Function Keys (NOT AVAILABLE ON MODEL 4086)

g#

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.

ga

gF

gp

gc

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)

gh

Miscellaneous Functions

g.

%

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.

gD

Model 4086

x2 — Squares the value on the display.

g%

Model 4087

A

Model 4087
only

Backspace Function

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

g %

Model 4086

gA

Model 4087

g,

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).

—

g*

g-

g+

g=

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.

Pi

— 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

gS

Machinist Function Keys

Preference Settings (Prefs)

customizable settings, such as dimensional answer

formats (see Preference Settings section).

— Accesses various

C

R

gR

Model 4087
only

f

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)

gf

Model 4087
only

b

gb

Model 4087
only

gb

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

t

gt

Model 4087
only

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

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

D

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

gD

Model 4087
only

#

F

c

d

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)

gd

Model 4087
only

g8

a

Model 4087
only

p

Model 4087
only

h

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

n

Model 4087
only

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

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:

gS

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.

O

4. To recall your selected Fractional Resolution:

r/

* 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

0.

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)

g1

(1/2)

g2

(1/32)

g3

(1/4)

g4

(1/64)

g6

(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

O

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

0.

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).

14 — 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

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)

S

S

S

S

:

:

:

S

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

7

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

O

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):

O

14ii
11mm

1.5g999

3g7g7g7

OO
10g76i
g
g7
g

* 126.000 INCH

B

(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

0.

*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

15 FEET 9-1/2 INCH

OO

(Feet)

17.32g7
=g7

17 FEET 3-27/32 INCH

g7
g

i

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

17.32 FEET

207.84 INCH

OO
8i1/8
g

i

g7

(Feet) 0.6770833 FEET

8-1/8 INCH

8.12 5 INCH

0.

0.

0.

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

KEYSTROKE DI SPL AY

OO

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

0.

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

OO

1.5g6
g1
g4

(kg) 1360.7771 KG

(lbs) 3000. LBS

(tons) 1.5 TON

0.

0.

0.

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)

(cont'd)

KEYSTROKE DI SPL AY

OO

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

0.

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

0.

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

M

gM

rM

rr

gr

When Memory is recalled (

will display the calculated Average and total Count of the

M

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.