Calculated Industries 4400 User Manual

T

RADESMAN CALC

TRADES MATH AND CONVERSION CALCULATOR

™

FAST. ACCURATE. RELIABLE.

Model 4400

Tradesman CalC™

The Tradesman Calc™ Trades Math
and Conversion calculator is designed
to be useful for both teaching technical
trade math and for using on the job in
a variety of settings requiring technical
math. It is ideal for people working in
math-oriented trades and for students
and instructors needing an easy-to-use
handheld calculator with applied math
functions.

With the Tradesman Calc™ you can –

• Work in Architectural (ruler) fractions
(1/4 inch, 1/16 inch, etc.), proper
fractions (2/3), mixed number
fractions (1-2/3) and improper
fractions (5/3)

•

Solve dimensional math problems,

and convert between U.S. and
metric dimensional math units

•

Solve angle and side problems with

trigonometry

•

Enter and solve circle, arc, radius,

hexagonal and polygonal dimensions

•

Convert between decimal and

fraction

•

Enter and solve ratios and

proportions

Pocket RefeRence Guide — 1

(cont’d)

(cont’d)

•

Enter math equations using

parentheses

•

Work with exponents

Use it in the classroom or on the job for
solving math and design problems in –

•

Welding

•

Metal Fabrication

•

Engineering

•

Automotive Service Technology

•

Aviation

•

Drafting

TaBle OF COnTenTs

GETTING STARTED

Key Denitions

Basic Function Keys 4

Dimensional Function Keys 5

Weight and Volume Keys 6

Trigonometric Function Keys 7

Miscellaneous Function Keys 8

Trades Math Function Keys 10

Setting Fractional Resolutions
Preference Settings
Calculating Percentages

4

4

13
15
18

Memory Operation
Paperless Tape Operation
Entering Dimensions and Units
Conversions
Basic Math Operations

USING THE
TRADESMAN CALC

Right Triangle Functions
Hex/Polygon Functions
Arc and Circle Functions
Ratio and Proportion Functions
Basic D:M:S and

Trigonometry Examples

18
20
21
22
24

25
28

30
33
34

37

AppENDIx

Default Settings
Auto Shut-Off
Accuracy/Errors
Battery
Reset

REpAIR AND RETURN

wARRANTy

fCC CLASS b

LookING foR NEw IDEAS

Pocket RefeRence Guide — 3

39
39

40
40
42
42

43

44

47

49

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

o

+- *
,=

0-9

and

%

g

On/Clear Key — Turns o n
power. Pressing once clears
the last entr y and the display.
Pressing twice clears all non­permanent values.

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

Arithmetic operation keys.

Keys used for entering

.

numbers.

Percentage — Used to dene a

given percentage of a number.

Convert —

dimensional keys to convert
between units or with other keys
to access special functions.

Used with the

r

gr

M

gM

Dimensional Function Keys

y

f

i

Recall —

keys to recall stored values
and settings.

Store —

values.

Accumulative Memory
— Adds displayed value to

Accumulative Memory.

M- —

from Accumulative Memory.

Yards — Enters or converts
to Ya rds.

Feet

to Feet as whole or decimal

numbers. Also used with

i

Feet-Inch values (e.g.,

9i1/2

presses during conversions
toggle between fractional Feet­Inch and decimal Feet.

Inch – Enters or converts to

Inches. Also used with

for entering fractional Inch

values (e.g.,

Repeated presses during
conversions toggle between
fractional and decimal Inches.

Pocket RefeRence Guide — 5

Used with other

Used for storing

Subtracts displayed value

— Enters or converts

and / keys for entering

).

Repeated

9i1/2

6 f

/

(cont’d)

).

(cont’d)

/

m

C

n

g 7

Weight and Volume Keys

g0

Fraction Bar – Used to enter
fractions. Fractions can be

entered as proper (1/2, 1/8,
1/16) or improper (3/2, 9/8).
If the denominator (bottom)

is not entered for a fractional

inch value, the calculator’s

fractional accuracy setting is
automatically used for entered
or calculated fractional inches.

Millimeters — Enters or

converts to millimeters.

Centimeters — Enters or

converts to centimeters.

Meters — Enters or converts
to meters.

Board Feet (Bd Ft)

or converts cubic values to
Board Feet.

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

— Enters

g4

g5

g6

g1

g2

g3

Trigonometric Function Keys

s

g s

c

Pounds (lbs) — Enters or

converts a weight or volume
value to Pounds.

Dry Ounces (dr y oz) — Enters

or converts a value to Dr y
Ounces.

Ton s — Enters or converts a

weight or volume value to Tons.

Kilograms (kg) — Enters or

converts a weight or volume
value to kilograms.

Grams — Enters or converts
a weight or volume value
to grams.

Metric Tons — Enters or

converts a weight or volume
value to metric tons.

Sine — Calculates the Sine

of an entered degree or
unitless value.

Arcsine

— Calculates the

angle for the entered or
calculated Sine value.

Cosine (Cos) — Calculates the
Cosine of an entered degree or
unitless value.

Pocket RefeRence Guide — 7

(cont’d)

g c

t

gt

Miscellaneous Functions

gG
gD
x

!

gx

g!

g,

Arccosine — Calculates
the angle for the entered or
calculated Cosine value.

Tan gen t

the Tangent of an entered
degree or unitless value.

Arctangent — Calculates
the angle for the entered or
calculated Tangent value.

Open parenthesis key.

Close parenthesis key.

Squares the value in
the dis play.

Calculates the square root of
the number in the display.

xy —

value other than x

root.

x

root value.

Reciprocal (1/x) – Finds the

reciprocal of a number (e.g.,

8g,=

(Tan) — Calculates

Enters an exponential

1/y

—

Enters the exponential

0.125).

2

or square

g*

g-

g %
g=
g+

g/

g.

g8

Clear All — Returns all stored
values to the default
settings. Does not af fect
Preference settings.

Change Sign (+/–) —
displayed value between
negative and positive value.

Preference settings

Paperless tape

Pi — Displays value of

(3 .1415927 ) .

Decimal to Fractional

(Dec ► Frac)

value in display from decimal
to fractional.

An additional press of /

provides the Least Common

Denominator (lCd) display,

calculating the LCD for the
displayed fraction.

Fractional to Decimal

(Frac ► Dec)

value in display from fractional
to decimal.

Degrees Fahrenheit (°F) —

Enters or converts to degrees
Fahrenheit.

—

Conver ts

—

Conver ts

Tog g l e

Pocket RefeRence Guide — 9

(cont’d)

(cont’d)

g9

Trades Math Function Keys

Degrees Celsius (°C) —

Enters or converts to degrees
Celsius.

a

p

h

Adjacent — Enters or

calculates the Adjacent
(horizontal) leg of a right
triangle. Calculates Adjacent

value given two other right­triangle values. Unitless entries
assumed Inches in U.S. mode;
millimeters in Metric mode.

Opposite — Enters or
calculates the Opposite

(vertical) leg or height of a right

triangle. Calculates Opposite
value given two other right­triangle values. Unitless entries
assumed Inches in U.S. mode;
millimeters in Metric mode.

Hypotenuse — Enters or
calculates the Hypotenuse

(diagonal) of a right triangle.

Calculates Hypotenuse
value given two other right­triangle values. Unitless entries
assumed Inches in U.S. mode;
millimeters in Metric mode.

G

ga

g p

gh

A

Angle — Enters or calculates

an Angle, providing the Adjacent
Angle for both instances.
Calculates an Angle given two

other right-triangle values.

X — Enters or calculates the

x value of a ratio. Calculates x

value given a Ratio and y value.

Y — Enters or calculates the
y value of a ratio. Calculates y

value given a Ratio and x value.

X:Y — Enters or calculates a
ratio. Calculates the Ratio

given values for x and y.

Arc — Enters Arc Length or
Arc Angle. Calculates Arc
Length, Arc Angle, Chord
Length, Arc Height, Radius and
Arc Area given any two of the
following values: Arc Angle/
Length, Diameter/Radius, Chord
Length and Arc Height. Arc

solutions cannot be solved for

the following cases: Arc Length

and either Chord Length or

Arc Height.

Pocket RefeRence Guide — 11

(cont’d)

(cont’d)

d

H

gA

Diameter — Enters a Diameter

(Circle) or Outside Diameter
(Polygon). Unitless entries

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

Calculates circle Area and

Circumference given entered
Diameter. Calculates Diameter
given entered Radius.

Hex/Polygon — Enters number

of Sides of a Polygon. A

multifunction key that calculates

Interior Angle, Exterior Angle,
Side Length, Outside Diameter,
Inside Diameter, Perimeter and
Area of a Polygon, given the
number of Sides, and either
Side Length, Outside Diameter

or Inside Diameter. Default

number of Sides is 6.

Radius — Enters or calculates
a Radius. Unitless entries
assumed Inches in U.S. mode;
millimeters in Metric mode.
Calculates Radius given
entered Diameter.

gd

gH

SETTING fRACTIoNAL
RESoLUTIoNS

Inside Diameter — Enters or
calculates the Inside Diameter
of a Polygon. Unitless entries
assumed Inches in U.S. mode;
millimeters in metric mode.
Calculates Inside Diameter
given number of Sides and
either Side Length or Outside
Di amete r.

Side Length — Enters or
calculates the Side Length of
a Polygon. Unitless entries
assumed Inches in U.S. mode;
millimeters in metric mode.
Calculates Side Length given
number of Sides and either
Inside or Outside Diameter.

The Tradesman Calc is set to display

fractional Inch 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.

Pocket RefeRence Guide — 13

(cont’d)

Permanently Set Fractional
Resolution

To permanently set the Fractional

Resolution, you must be in

Setting mode.

KeYsTrOKe di sP l aY

1.

Access Preference Settings:

g%

2.

Toggle through available Fractional

Resolutions:

+
+
+
+
+

(repeats options)

+

3. To permanently set the Fractional
Resolution you have selected above,
press
displayed Fractional Resolution and
exit Preference settings.

KeYsTrOKe di sP l aY

(or any key) to set the

O

Preference

FRAC 0-1/64

FRAC 0-1/2
FRAC 0-1/4

FRAC 0-1/8
FRAC 0-1/16
FRAC 0-1/32
FRAC 0-1/64

inCh*

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

inCh

inCh

inCh

inCh

inCh

inCh

0.

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 sP l aY

OO

0-44/64

44/64i
+ 1/64i=

(1/16)

g1

(1/2)

g2

(1/3 2)

g3

(1/4)

g4

(1/6 4)

g6

(1/8 )

g8
O O

* 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 rever t
back to your Permanent Fractional Setting
upon press of
calculator off.

*

or when you turn the

O

0-45/64

0-11/16

0-1/2

0-23/32

0-3/4

0-45/64

0-3/4

inCh

inCh

inCh

inCh

inCh

inCh

inCh

inCh

0.

0.

Pocket RefeRence Guide — 15

pREfERENCE SETTINGS

Press g, then % to access the
Preferences menu. Continue pressing

to toggle through different

%

Preferences. Press
to toggle between options of the
different Preferences. Press

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).

KeYsTrOKe di sP l aY

(Fractional

g%

Resolution)

+
+
+
+
+

(repeats options)

+

Second press of
(Functional Result
Rounding):

+
+

(repeats options)

+

+

%

or - keys

O

FraC

0-1/64

FraC

0-1/2

FraC

0-1/4

FraC

0-1/8

FraC

0-1/16

FraC

0-1/32

FraC

0-1/64

FUNC

FUNC

FUNC

FUNC

to

0.0000

0.000

FLOAt

0.0000

inCh

inCh

inCh

inCh

inCh

inCh

inCh

Third press of %
(Default Unit Format): US UnItS

%

METR UnItS

area 0.
area 0.

area 0.

area 0.

VOL 0.

VOL 0.

VOL 0.

VOL 0.

FraC

FraC

COnSt.

MATH CHAIn

sQ FeeT

sQ inCh

sQ m

sQ Yd

CU YD

CU FEET

CU INCH

CU M

Std.

+

(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):

%

+

(repeats options) FRAC Std.

+

Seventh press of
(Mathematical
Operation): MATH OrdEr

+

(repeats options) MATH OrdEr

+

Pocket RefeRence Guide — 17

CALCULATING pERCENTAGES

The % key can be used for nding
a given percent of a 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 (non­dimensioned, linear, square or cubic).

Find 18% of 50 square feet:

KeYsTrOKe di sP l aY

OO

9.

50ff*18%

Take 20% from 17 Feet 6 Inches:

sQ FeeT

17f6i

14

FeeT

0

-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 Memor y

Display/Clear Memory

Clear Memory and replace
with displayed value

inCh

M

gM

rM

rr

SM

0.

Memory is semi-permanent, clearing

only when you do one of the following:
— turn off the calculator
— press

rr

— press

When Memory is recalled (

consecutive presses of
the calculated Average and total Count
of the accumulated values.

Using M+

KeYsTrOKe di sP l aY

45M
25M
15gM
rM
M
M
rr

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
(

gr1

presses of the

the corresponding number key (

(Clear All)

g*

rM

will display

M

M+ 45. &
M+ 25. &

(M-)

AVG 18.333333 &

). To use M2 - M9, replace the

key with presses of

1

M- 15. &

TTL 55. &

CNT 3. &

M+ 55.

2 - 9

Pocket RefeRence Guide — 19

),

(cont’d)

).

(cont’d)

You can replace a value in one of the
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 sP l aY

175gr1

gr 1

0 gr 1

r1

M-1 175.

oO
r1
0gr1

pApERLESS TApE opERATIoN

The Paperless Tape function is useful for

checking gures. You can review your
entries by scrolling through your past 20

entries or calculations. Press
access Paperless Tape mode. Press
or

to scroll forward or backward.

-

Press =
a new entry or calculation.

KeYsTrOKe di sP l aY

to exit mode and continue with

M-1 175.

M-1 0.

g=

OO

6.

6 f+
5f+
4f=

11.

15.

FeeT

FeeT

FeeT

to

0.

+

0.

r =

TTL= 15.

+
+
+

-

=

TTL= 15.

+ 1 0f=

ENTERING DIMENSIoNS
AND UNITS

Linear Dimensions

The following examples show how linear

dimensions are entered.

Note: The O key should be pressed af ter
each of the entries to clear the display.

dimensiOn KeYsTrOKe

5 Feet
1/2 Inch
5 Feet 1-1/2

Inches

10 Yards

17.5 meters

Square and Cubic Dimensions

For square dimensions, enter the

value and press the unit key twice.
For cubic dimensions, press the unit
key three times.

5f1i1/2

17.5n

Pocket RefeRence Guide — 21

FeeT

01 6.

FeeT

02 + 5.

FeeT

03 + 4.

FeeT

02 + 5.

FeeT

FeeT

25.

FeeT

5f

1/2i

10y

(cont’d)

(cont’d)

dimensiOn KeYsTrOKe

130 square Feet

5.5 cubic meters

44 square Inches

CoNVERSIoNS

Linear Conversions

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

KeYsTrOKe di sP l aY

130 f f

5.5 nnn
44 ii

OO

10

FeeT

10 f6i
gi
g f
gm
gn

Square and Cubic Conversions

Convert 6 square Feet to other
square dimensions:

KeYsTrOKe di sP l aY

6

126.

10.5

3200.4

3.2004 m

OO

6

6 ff
gm

55 7418. 2 4

gn

Convert 0.05 cubic meters to other
cubic dimensions:

KeYsTrOKe di sP l aY

sQ FeeT

sQ mm

0.5574182

OO

inCh

inCh

FeeT

mm

sQ m

0.

0.

0.

.05 nnn
gC
gi
gf

Weight Conversions

Convert 1.5 Tons to Pounds
and kilograms:

KeYsTrOKe di sP l aY

1.7657333

50000.

3051.1872

0.05

CU CM

CU INCH

CU FEET

OO

1.5g6
g4
g1

Weight per Volume Conversions

Convert a cubic meter of concrete
to pounds. The concrete weighs 111
pounds per cubic foot.

Note: The default weight conversion is 490
pounds per cubic foot.

KeYsTrOKe di sP l aY

(tons)
(lbs)
(kg)

1.5

3000.

1360.7771 KG

OO
111

(wt/vol)

g0
1nnn

(lbs)

g4

*

g*

*Restores default weight conversion to
default setting of 490 pounds per cubic foot.

111.

lB Per CU FEET

3919.928

ALL CLEArEd

1

CU M

TOn

lBs

CU M

lBs

0.

0.

Pocket RefeRence Guide — 23

Temperature Conversions

Convert 46 °Fahrenheit to °Celsius:

KeYsTrOKe di sP l aY

OO

(°C)

(°F)

7.7777778

46g8
g9

bASIC MATH opERATIoNS

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 sP l aY

OO

0.

46 °F

°C

0.

6f2i

6

FeeT

2-1/2

1/2 +

inCh

11f5i

17

FeeT

7-3/4

1/4+

inCh

18.25

19

FeeT

2

i=

inCh

-2i

18

FeeT

11-7/8

1/8=

Multiplying Dimensions

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

inCh

KeYsTrOKe di sP l aY

5

FeeT

5f3i*

3

11f6
i1/2=

Multiply 2 Feet 7 Inches by 10:

60.59375 sQ

2f7i

25

FeeT

*10=

Dividing Dimensions

Divide 30 Feet 4 Inches by 7 Inches:

KeYsTrOKe dis Pl aY

10

30f4i,7i=

Divide 20 Feet 3 Inches by 9:

20f3i

2

FeeT

,9=

USING THE TRADESMAN CALC

With the Tradesman Calc you can work

in architectural, or ruler fractions (1/2,
1/4, 1/16, etc.), proper fractions (2/3),
mixed number fractions (1-2/3) and
improper fractions (5/3).

If you are working with dimensional

units, be sure to enter the dimensional
unit with the fractions, as shown below.

Fractional Inch values will be displayed

as architectural fractions – 1/2, 1/4, 1/8,
1/16, 1/32 and 1/64.

3

inCh

FeeT

inCh

52.

inCh

Pocket RefeRence Guide — 25

(cont’d)

(cont’d)

Note: See pages 15-17 for instructions on
setting the default fractional resolution on
your calculator.

Note: When entering mixed frac tions, the
whole number must be less than four digits
– i.e., 1 through 999.

The examples below show how to enter

fractions and toggle between different

formats, such as entering an improper
fraction and toggling to a mixed number.

Enter 10-13/16:

KeYsTrOKe di sPl aY

OO
10/13/16

En t er 11 9 - 9 8 / 9 9 :

10 13/16

OO
119/
98/99

Enter 33/13, convert to mixed number
and toggle back to improper fraction:

119 98/99

OO
33/13
=
/

Enter 1.4578 and conver t to a fraction
and back to a decimal:

KeYsTrOKe di sPl aY

0 33/13

2 7/13

LCD 0 33/13

OO

0.

0.

0.

0.

1.4578
g/
g.

In this example, add a string of fractions,

change to an improper fraction and to a
decimal fraction.

Add 1-1/3 + 1/4 + 1/6:

KeYsTrOKe di sPl aY

OO

1.4578

1 179/391

1.4578

0.

1/1/3+
1/4+
1/6=

Toggle to improper fraction:

*

/

* Shows Least Common Denominator for
entered or calculated fraction.

Toggle to decimal:

g.

Toggle back to proper fraction:

/

If you have a large fraction, you can

easily simplify it or convert it to its
lowest terms.

Change 30/48 to its lowest terms:

OO
30/48

Pocket RefeRence Guide — 27

1 3/4

LCD 0 21/12

1.75

1 3/4

0.

0 30/48

(cont’d)

(cont’d)

KeYsTrOKe di sP l aY

g //

0 5/8

Simplify 25/65:

25/65
g //

25/65

0 5/13

RIGHT TRIANGLE fUNCTIoNS

With the Tradesman Calc, 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

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:

B

Opposite
Leg: 4

KeYsTrOKe di sP l aY

Adjacent
Leg: 3

Hypotenuse

A

OO

1. Enter the Adjacent Leg length:

0.

ADJ 3.

3ia

2. Enter the Opposite Leg length:

4ip

3. Solve for the Hypotenuse:

h

4. Solve for the Angle:

G

5. Solve for the Adjacent Angle:

G

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 di sP l aY

HYP 5.0000

ANGL 53.1301°

ADJ 36.8699°

inCh

OPP 4.

inCh

OO

1. Enter the Hypotenuse:

12ih

2. Enter the Known Angle:

35.34G

3. Solve for the Adjacent Angle:

G

4. Solve for the Adjacent Leg:

a

Pocket RefeRence Guide — 29

HYP 12.

ANGL 35.34 °

ADJ 54.6600 °

ADJ 9.7888

(cont’d)

inCh

inCh

inCh

0.

(cont’d)

KeYsTrOKe di sP l aY

5. Solve for the Opposite Leg:

p

HEx/poLyGoN fUNCTIoNS

The Hex/Polygon function lets you nd
the Interior Angle and Exterior Angle
of a Polygon, given the number of

Sides. The default number of Sides is

6. If a Side Length, Inside Diameter or
Outside Diameter, is also entered you
can calculate the Polygon’s Side Length,
Outside Diameter, Inside Diameter,
Perimeter and Area.

Find the Interior and Exterior Angles of a
6-sided Polygon:

KeYsTrOKe di sP l aY

OPP 6.9411

inCh

OO
H
H
H

Find the Interior and Exterior Angles of
an 8-sided Polygon:

KeYsTrOKe di sP l aY

SIDE 6.

INT 120.0000 °

EXT 60.0000 °

OO
8 H
H
H

SIDE 8.

INT 135.0000 °

EXT 45.0000 °

0.

0.

Find the Interior and Exterior Angles,
Side Length, Inner Diameter, Perimeter
and Area of an 8 -sided Polygon with a
10-Inch Outer Diameter:

KeYsTrOKe di sP l aY

OO

1. Enter the Outer Diameter:

DIA 10.

SIDE 8.

OD 10.

sQ inCh

inCh

inCh

inCh

inCh

inCh

10 d

2. Enter the Number of Sides:

8H

3. Find the Interior Angle:

H

4. Find the Exterior Angle:

H

5. Find the Side Length:

H

6. Show the Outside Diameter:

INT 135.0000 °

EXT 45.0000 °

LNTH 3.8268

H

7. Find the Inner Diameter:

H

8. Find the Perimeter:

H

9. Find the Area:

H

ID 9.2388

PER 30.6147

AREA 70.7107

0.

Pocket RefeRence Guide — 31

(cont’d)

(cont’d)

Find the Interior and Exterior Angles,
Inner Diameter, Outer Diameter,
Perimeter and Area of a 6-sided
Polygon with an 8-Inch Side Length:

KeYsTrOKe di sP l aY

OO

1. Enter the Side Length:

8 i gH

2. Select Hex/Polygon function
(default is 6 Sides):

H

3. Find the Interior Angle:

H

4. Find the Exterior Angle:

H

5. Show the Side Length:

H

6. Find the Outside Diameter:

H

7. Find the Inner Diameter:

H

8. Find the Perimeter:

H

9. Find the Area:

H

AREA 166.2769

LNTH 8.

SIDE 6.

INT 120.0000 °

EXT 60.0000 °

LNTH 8.

OD 16.0000

ID 13.8564

PER 48.0000

sQ inCh

inCh

inCh

inCh

inCh

inCh

0.

ARC AND CIRCLE fUNCTIoNS

With the Tradesman Calc, you can
easily solve Circle and Arc calculations.

Circumference and Area of a Circle

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

KeYsTrOKe di sP l aY

OO

DIA 11.

11id
d
d

(Circumference)

Arc Calculation –

Radius and Angle Known

Find the Arc Length, Chord Length, Arc
Height and Area of a circle with a Radius
of 4 Inches and an Arc Angle of 180°:

KeYsTrOKe di sP l aY

AREA 95.0332

CIRC 34.5575

inCh

sQ inCh

sQ inCh

OO
4gA
180A

(Arc Length)

A

(Chord Length)

A

(Arc Height)

A

(Radius)

A

(Area)

A

(Radius)

(Arc Angle)

AREA 25.1327

RAD 4.

ARC 180.°

ARC 12.5664

CORD 8.0000

HGHT 4.0000

RAD 4.

sQ inCh

inCh

inCh

inCh

inCh

inCh

0.

0.

Pocket RefeRence Guide — 33

(cont’d)

RATIo AND pRopoRTIoN
fUNCTIoNS

With the Ratio and Proportion keys you

can nd:

• an x value, given a Ratio and y value

• a y value, given a Ratio and x value

• a Ratio, given values for x and y

Ratios and Proportions can be
calculated with or without dimensional
units.

If the Ratio of nitrogen to hydrogen is

1:3, and a sample of ammonia has 1,563
nitrogen atoms, how many hydrogen

atoms are present?

KeYsTrOKe di sP l aY

OO

1. Enter the Ratio:

1ga
3gp

2. Show the Ratio:

gh

3. Enter the known number of

1563ga

4. Solve for the unknown number of

gp

(x value)
(y value)

(X:Y )

nitrogen atoms:

(X)

hydrogen atoms:

(Y)

X 1.
Y 3.

1 = 3.0000

X 1563.

Y 4689.0000

0.

You can also enter x, y values,
nd proportion values and inverse

proportional values.

Find the ratio if x = 1 and y = 4. Using
the resulting ratio, nd the value of Y if
X = 5. Then, nd the value of X if Y = 8.

KeYsTrOKe di sP l aY

OO

1. Enter the Ratio:

1ga
4gp

2. Show the Ratio:

gh

3. Enter the rst Proportion value (X):

5ga

4. Show resulting Y value:

gp

5. Change the Y value to 8:

8gp

6. Show resulting X:

ga

You can also enter x, y values in
dimensional units to nd Ratio values.

Find the ratio if x = 1 Inch and y = 4

Feet. Using the resulting Ratio, nd the

value of Y if X = 2.5 Inches

(x value)
(y value)

(X:Y )

(X)

(Y)

(Y)

(X)

Pocket RefeRence Guide — 35

X 1.
Y 4.

1 = 4.0000

X 5.

Y 20.0000

Y 8.

X 2.0000

(cont’d)

0.

(cont’d)

KeYsTrOKe di sP l aY

OO

1. Enter the Ratio:

1iga
4fgp

2. Show the Ratio:

gh

3. Enter the rst propor tional value:

2.5iga

4. Show resulting Y value:

gp

You can also enter fractional values for x
and y to nd Ratio values.

Find the ratio if x = 3/4 and y = 1. Using

the resulting Ratio, nd the value of Y if
X = 5. Then, nd the value of X if Y = 4.

KeYsTrOKe di sP l aY

(x value)
(y value)

(X:Y )

(X)

(Y)

X 1.

Y 4.

1 = 48.0000

X 2.5

Y 120.0000

inCh

FeeT

inCh

inCh

OO

1. Enter the Ratio:

3/4ga
1gp

2. Show the Ratio:
(X:Y )

gh

3. Enter the proportional X value

5ga

(x value)

(y value)

(X)

X 0 3/4

Y 1.

1 = 1.3333

X 5.

0.

0.

4. Show resulting Y value:
(Y)

gp

5. Change the propor tional Y value to 4:

4 gp

6. Show resulting X value:

ga

bASIC D:M:S AND
TRIGoNoMETRy ExAMpLES

Converting
Degrees:Minutes:Seconds

Convert 23° 42’ 39” to decimal degrees:

KeYsTrOKe di sP l aY

(Y)

(X)

Y 6.6667

X 3.0000

OO
2 3 . 4 2
. 3 9
D

Convert 44.29° to
degrees:minutes:seconds format:

KeYsTrOKe di sP l aY

DMS 23.42.39

23.710833°

OO

44.29

D

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

Pocket RefeRence Guide — 37

DMS 44.17.24°

44.29

Y 4.

0.

0.

Trigonometric Functions

Trigonometric functions are available
on the Tradesman Calc calculator.

The drawing and formulas below list

basic trigonometric formulas, for your

reference:

Given side A and angle a, nd:

Side C A

(e.g.,

3f,53.13c=

Side B A
Angle b 90° - a

Given side A and angle b, nd:

Side B A
Side C A , b

Angle a 90° - b

Given side B and angle a, nd:

Side A B
Side C B , a

Given side C and angle a, nd:

Side A C

,

*

,

,

*

a

a

b

a

a

c=

t=

t=
s=

t=
s=

c=

)

=

=

Side B C * a

Given side A and side C, nd:

Angle a A
Angle b A , C

Given side B and angle b, nd:

Side C B
Side A B * b

aPPendiX

DEfAULT SETTINGS

After a Clear All (

calculator will return to the following
settings:

STORED VALUES DEFAULT VALUE

Polygon Number of Sides
Weight per Volume

If you replace your battery or perform

a Full Reset* (press

and press O), your calculator

*

will return to the following settings (in
addition to those above):

PreFerenCe se TTinGs DEFAULT VALUE

Fractional Resolution 1/64
Functional Result Rounding 0.0000
Default Unit Format US

Area Display Standard

Pocket RefeRence Guide — 39

g*

490. lB Per CU FEE T

, hold down

o

C

,

,

), your

s=

gc
gs

b

c=

t=

6

(cont’d)

(cont’d)

PreFerenCe se TTinGs DEFAULT VALUE

Volume Display Standard
Fractional Mode Standard
Mathematical Operation Order

* Pressing Reset ‒ a small hole located below

the

key ‒ will also per form a Full Reset.

o

AUTo SHUT-off

Your calculator will shut itself off after

about 8-12 minutes of non-use.

ACCURACy/ERRoRS

Accuracy/Display Capacity

Your calculator has a t welve digit
display. This is 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
twelve digits.

Errors

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

button once.

O

At this point you must determine

what caused the error and re-key the
problem.

Error Codes

OFlO

MATH Error

DIM Error

ENT Error

Overow (too large)

Divide by 0

Dimension error

Invalid entry error

Auto-Range

If an “overow” is created because of

a calculation with small units that are
out of the standard digit range of the

display, the answer will be automatically
expressed in the next larger units
(instead of showing “OFlO”) – e.g.,
100,000,000 mm is shown as
100,000 m.

Pocket RefeRence Guide — 41

(cont’d)

bATTERy

This model uses one (1) CR2016
battery (included). This should last
approximately 800 hours of actual use (1
year plus for most people). Should your

calculator display become very dim or

erratic, replace the battery.

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.

RESET

If your calculator should ever “lock up,”

press Reset – a small hole located
below the
reset.

key – to perform a total

o

REPAIR AND RETURN

RETURN GUIDELINES

1. 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.

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

3. If you need more assistance, please go

to the website listed below.

4. If you believe you need to return your

product, please call a Calculated

Industries representative between the

hours of 8:00am and 4:00pm Pacic

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

Pocket RefeRence Guide — 43

WarranTY

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 WARRANTY WILL NOT APPLY
TO THE PRODUCT IF IT HAS
BEEN DAMAGED BY MISUSE,
ALTERATION, ACCIDENT, IMPROPER
HANDLING OR OPER ATION, OR
IF UNAUTHORIZED REPAIRS ARE
ATTEMPTED OR MADE. SOME
EXAMPLES OF DAMAGES NOT
COVERED BY WARRANTY INCLUDE,
BUT ARE NOT LIMITED TO, BATTERY
LEAK AGE, BENDING, A “BLACK INK
SPOT” OR VISIBLE CRACKING OF
THE LCD, WHICH ARE PRESUMED
TO BE DAMAGES RESULTING FROM
MISUSE OR ABUSE.

To obtain warranty ser vice 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 1-775­885-4900 to obtain current product

repair information and charges. Repairs

are guaranteed for 90 days.

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.

Pocket RefeRence Guide — 45

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
PR OCED U RES , MATH E MATIC A L
ACCURACY AND PREPROGRAMMED
MATERIAL, IS SOLD “AS IS,” AND
YOU THE PURCHASER ASSUME THE
ENTIRE RISK AS TO ITS QUALITY
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 modication, 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 specic rights, and
you may also have other rights, which

vary from state to state.

FCC Class B

This equipment has been cer tied to

comply with the limits for a Class B

calculating device, pursuant to Subpart J
of Part 15 of FCC rules.

Pocket RefeRence Guide — 47

lOOKinG FOr neW ideas

Calculated Industries, a leading

manufacturer of special-function
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.

4840 Hytech Drive

Carson City, NV 89706 U.S.A.

1-800-854-8075

Fax: [phone]

E-mail: [e-mail]

www.calculated.com

Pocket RefeRence Guide — 49

Designed in the United States of America.

Printed in China

PRG4400E-B