PROJECTCALC
®
CLASSIC
Model 8503
Pocket Reference Guide
TABLE OF CONTENTS
Key Definitions ................................1
Basic Keys ................................................1
Convert Key Functions ..............................2
Memory ....................................................2
Dimensional Unit Keys..............................3
Entering Square or Cubic Dimensions ......3
Fractional Resolution ................................4
Decorating Keys........................................4
Standard Sizes/Coverage Values............5
Examples - Conversions,
Basic Dimensional Math ..................6
Linear Conversions ..................................6
Square and Cubic Conversions ................6
Basic Dimensional Math ..........................7
Decorating Examples - Finding
Quantities of Materials ....................8
Paint: How Many Gallons, Quarts or
Pints Do I Need?....................................8
Paint: How Much Wall Space
Will it Cover? ........................................9
Wallpaper: How Many Rolls
Do I Purchase? ......................................9
Wallpaper: How Much Wall Space
Will it Cover? ........................................9
Tiles: How Many Tiles Do I Need? ..........10
Finding the Cost of Materials ..............11
Accuracy, Auto Shut-Off and Batteries....11
Repair and Return ..........................14
Warranty ......................................14
The ProjectCalc
®
Classic was designed specifically for
home decorators. It’s an indispensable tool for all your
home decorating projects! It helps you quickly figure
project material quantities and costs for paint, tile and
wallpaper, as well as linear distances, areas/volumes.
Unlike other calculators, it works and converts directly in
Feet-Inches-Fractions, Yards, Metric, Square and Cubic,
so you don’t have to figure tedious math.
Use it to estimate quantities & costs for:
• Tile
• Paint
• Wallpaper
Basic Keys
o — On/Clear Key
Turns power on. Pressing once clears the display.
O
Turns all power off.
+ – x ÷ =
Arithmetic operation keys.
%
Percent key.
0 — 9 and •
Keys used for entering numbers.
/ — Fraction Bar Key
Used to enter fractions. Fractions can be entered as 1/2,
1/16, 3/2, etc.
KEY DEFINITIONS
POCKET REFERENCE GUIDE - 1
Convert Key Functions
Ç — Convert Key
Used with the dimensional unit keys to convert between
dimensions (e.g., feet-inches to yards), the decorating
keys to calculate material quantities, or with other keys
to access special functions.
Ç – — Sign (+ / –)
Sets value on display to plus or minus. (Repeated presses
of Ç – will change sign from plus or minus.)
Ç ÷ — Square Root
Finds square root of value in display.
Ç x — x
2
Finds square of value in display.
Ç % — Pi (π)
Constant 3.141593
Ç • — Cost
“Cost” function that allows you to compute total material
cost, given a unit dimension and an entered Per Unit Cost.
Memory
Ç + — M+
Adds or stores a value in the cumulative memory (e.g.,
1 5 0 Ç +). Semi-permanent means the value is
cleared when the calculator is turned off.
Ç = — MR
Recalls memory value (e.g., if 150 has been stored in
Memory, pressing Ç = will display 150).
Ç o — MC
Clears memory value.
POCKET REFERENCE GUIDE - 2
Dimensional Unit Keys
y — Yards Key
Enters or converts to yards.
f — Feet Key
Enters or converts to feet as whole or decimal numbers.
Also used with the i and / keys for entering Feet-
Inch Fraction values (e.g., 6 f 9 i 1 / 2).
Repeated presses during conversions toggle between
Feet-Inch Fractions and Decimal Feet.
i — Inch Key
Enters or converts to inches as whole or decimal numbers.
Also used with the / key for entering fractional inch
values (e.g., 9 i 1 / 2). Repeated presses during
conversions toggle between Fractional and Decimal Inches.
m — Meter Key
Enters or converts to meters.
Entering Square or Cubic
Dimensions
To label a dimension as "square" or "cubic," enter the
value, then press the desired unit key twice for square
and three times for cubic. For example, to enter 25 cubic
yards, press 2 5 y y y.
POCKET REFERENCE GUIDE - 3
Fractional Resolution
Your calculator is set to display fractional values to the
nearest 16th of an inch (default setting). The current
fractional resolution can be displayed by pressing Ç
/. Repeated presses of / will then revolve through
the available settings: 1/16, 1/32, 1/64, 1/2, 1/4, and 1/8.
The setting you last see on the display will be perma-
nently set when you exit the fractional setting display
(simply press any other key to exit).
Your calculator will also toggle between the highest frac-
tional resolution available and the set resolution with
repeated presses of the Fraction Bar / when a fraction
is displayed.
Decorating Keys
The following keys help you quickly estimate material
quantities for common decorating projects. Note: if you
clear the display (i.e. press o) and then press one of
the decorating keys, the conversion factor will be dis-
played. For example, pressing Ç 8 (Wallpaper) after
clearing the display will show the area of coverage for
one roll of Wallpaper.
Ç 7 (Paint)
Calculates volume of paint, based on an entered area.
Finds quantity in gallons, quarts, or pints with repeated
key presses.
Ç 8 (Wallpaper)
Calculates number of rolls of wallpaper, based on an
entered area.
POCKET REFERENCE GUIDE - 4
Ç 9 (Tile)
Finds the number of tiles, based on an entered area.
Repeated key presses will scroll between numbers of
tiles for various "standard" tile sizes in this order: 18",
16", 13", 12", 10", 8", 6", 4", 2", 1" and 24" (starts from
last tile displayed).
Tile Note: Tile sizes are shown in inches, not square
inches. In other words, a 6" tile is really 6" x 6," or a 36
square-inch tile, but it is labeled as a 6" size. Also, grout
width (e.g., 1/8 inch surrounding each tile) is not
included in the calculation.
The ProjectCalc Classic uses the below standard sizes
or coverage values to determine quantities:
Application Standard Sizes or Coverage
Paint 1 gallon covers 350 square feet
Wallpaper 1 roll covers 56 square feet
(European double roll)
Tile Sizes 18", 16", 13", 12", 10", 8", 6", 4",
2", 1", 24"
STANDARD SIZES/COVERAGE
VALUES
POCKET REFERENCE GUIDE - 5
Linear Conversions
Convert 16 feet to other dimensions.
Keystroke Display
o 0.
1 6 f 16 FEET
Ç y 5.333333 YD
Ç f 16 FEET 0 INCH
Ç i 192 INCH
Ç m 4.8768 M
Note: you can convert feet-inch-fraction entries to deci-
mal feet or inches by pressing Ç f or Ç i.
Square & Cubic Conversions
Convert 25 square feet to other square dimensions.
Keystroke Display
o 0.
2 5 f f 25.
SQ FEET
Ç y 2.777778 SQ YD
Ç m 2.322576 SQ M
Convert 25 cubic feet to cubic yards.
Keystroke Display
o 0.
2 5 f f f 25.
CU FEET
Ç y 0.925926 CU YD
EXAMPLES – CONVERSIONS,
BASIC DIMENSIONAL MATH
POCKET REFERENCE GUIDE - 6
Basic Dimensional Math
Keystroke Display
o 0.
Adding Dimensions:
1 0 i + 2 f 5 i = 3
FEET 3 INCH
Subtracting Dimensions:
5 f – 1 i 3 / 4 = 4
FEET 10-1/4 INCH
Dividing Dimensions:
1 0 f ÷ 1 i 1 / 4 = 96.
Multiplying Dimensions/Waste Factor Allowance:
1 5 0 f f + 1 0 % 165.
SQ FEET
Finding Area/Square Feet:
2 f x 1 f 2 i = 2.333333
SQ FEET
Finding Volume/Cubic Feet:
5 f x 1 • 5 f x 2 i = 1.25
CU FEET
POCKET REFERENCE GUIDE - 7
Some basic examples are listed below to help you quick-
ly determine the quantities of materials required for vari-
ous home remodeling/decorating projects, such as
installing tiles, painting and wallpapering rooms.
Note on Adding a Waste Allowance: When estimating
quantities, you may want to factor in a Waste Allowance
to make sure you have enough material to allow for
error. For example, add 10% to your total by pressing
+ 1 0 %.
Also, for most problems, the Decorating Keys will also
find the Coverage Area given an entered Quantity. For
example, you can find the Coverage Area of Paint given
"X" Number of Cans.
Paint: How Many Gallons, Quarts or
Pints Do I Need?
Estimate how many quarts of paint will you need to
cover a wall measuring 12’ x 8’? How many pints? How
many gallons?
Keystroke Display
o 0.
1 2 f x 8 f = 96.
SQ FEET
Ç 7 (Paint) 1.10 QT
7 2.19 PT
7 0.27 GL
DECORATING EXAMPLES –
FINDING QUANTITIES OF
MATERIALS
POCKET REFERENCE GUIDE - 8
Paint: How Much Wall Space Will it
Cover?
How many square feet will 10 gallons of paint cover?
Keystroke Display
o 0.
1 0 Ç 7 (Paint) 3,500.00 SQ FEET
Note: Based on paint coverage of 350 square feet/gallon.
You can only find coverage of paint by entering gallons
(calculator cannot convert pints or quarts using a unit-
less entry).
Wallpaper: How Many Rolls Do I
Purchase?
Estimate the number of wallpaper rolls needed for a wall
measuring 15’ x 9’.
Keystroke Display
o 0.
1 5 f x 9 f = 135. SQ FEET
Ç 8 (Wallpaper) 2.41 ROLL
(round up to 3 Rolls)
Wallpaper: How Much Wall Space
Will it Cover?
How many square feet will 5 rolls of wallpaper cover?
Keystroke Display
o 0.
5 Ç 8 (Wallpaper) 280.00 SQ FEET
POCKET REFERENCE GUIDE - 9
Tiles: How Many Tiles Do I Need?
Estimate how many tiles you need to cover a floor meas-
uring 12’ x 10’. Add a 10% waste allowance, in case you
need extra tile. Note: Grout width (e.g., 1/8 inch
between tiles) not included in the calculation.
Note: The ProjectCalc Classic lists 11 of the most
popular tile sizes. Tile sizes may not be displayed in the
order that you see here since the calculator remembers
the last tile size that was displayed.
Keystroke Display
o 0.
1 2 f x 1 0 f = 120.
SQ FEET
+ 1 0 % 132. SQ FEET
Ç 9 (Tile) 58.67 TILE (18 IN)
9 74.25
TILE (16 IN)
9 112.47
TILE (13 IN)
9 132.00
TILE (12 IN)
9 190.08
TILE (10 IN)
9 297.00
TILE (8 IN)
9 528.00
TILE (6 IN)
9 1,188.00
TILE (4 IN)
9 4,752.00
TILE (2 IN)
9 19,008.00
TILE (1 IN)
9 33.00
TILE (24 IN)
9* 132.
SQ FEET
*Note: Redisplays area used for calculating materials.
POCKET REFERENCE GUIDE - 10
You can also use the ProjectCalc Classic to determine
the total cost of a project, if you know the material’s cost
per unit. See the following example.
Paint: Cost of
Estimate the amount of paint needed for a room measur-
ing 15’ long x 12’ wide x 8’ high. If it costs $17.50 per
gallon, what is the total cost? First, multiply the perime-
ter of the room with the wall height, and then calculate
Paint.
Keystroke Display
o 0.
1 5 f + 1 5 f + 1 2 f
+ 1 2 f = 54 FEET 0 INCH
x 8 f = 432 SQ FEET
Ç 7 (Paint) 1.23 GL
x 1 7 • 5 0 Ç • (Cost) 21.60*
(approx. $22)
*Note: it will take slightly more than one gallon to paint
the room and cost approximately $22 for 1.23 gallons
based on the per gallon price of $17.50.
FINDING THE COST OF
MATERIALS
POCKET REFERENCE GUIDE - 11
Accuracy
The normal display is seven digits; fraction display four
digits. Fraction resolution displays values to the nearest
16th of an inch, unless changed by user. Each calcula-
tion is carried out internally to ten digits.
Auto Shut-Off and Batteries:
Auto Shut-Off: After 8-12 minutes of non-use.
Batteries Included: Two LR-43 batteries.
Battery-Life: 575 hours of actual use.
To replace the batteries, use a small Phillip’s head screw-
driver (or you can also use a screwdriver found in eye-
glass repair kits) and unscrew the
single screw
in the center of the battery door,
located on the back of the cal-
culator (see diagram).
Carefully remove the
battery door, remove the
old batteries from the clips
and replace them with two new
LR-43 batteries. Make sure the positive sides (+) are
facing up. Replace the battery door and re-attach the
screw.
Note: Replacement LR-43 batteries are available at most
discount or electronics stores. Or, call Calculated
Industries at 1-800-854-8075.
ACCURACY, AUTO SHUT-OFF,
BATTERIES AND RESET
POCKET REFERENCE GUIDE - 12
Reset
If your calculator should ever "lock up," use the end of a
paperclip (or something of similar size) to press the
Reset switch. It is located above the m key at the upper
right of the calculator.
POCKET REFERENCE GUIDE - 13
Warranty, Repair and Return Information
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 bat-
tery 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 prod-
uct, please call a Calculated Industries rep-
resentative between the hours of 8:00am
and 4:00pm 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
REPAIR AND RETURN
POCKET REFERENCE GUIDE - 14
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 WARRANTY 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, A “BLACK INK SPOT” OR
VISIBLE CRACKING OF THE LCD, WHICH ARE PRE-
SUMED 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.
WARRANTY
POCKET REFERENCE GUIDE - 15
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.
Disclaimer
CI MAKES NO WARRANTY OR REPRESENTATION, EITHER
EXPRESS OR IMPLIED, WITH RESPECT TO THE PROD-
UCT’S QUALITY, PERFORMANCE, MERCHANTABILITY, OR
FITNESS FOR A PARTICULAR PURPOSE. AS A RESULT,
THIS PRODUCT, INCLUDING BUT NOT LIMITED TO, KEY-
STROKE PROCEDURES, MATHEMATICAL 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 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 war-
ranty gives you specific rights, and you may also have other
rights, which vary from state to state.
POCKET REFERENCE GUIDE - 16
Calculated Industries
4840 Hytech Drive
Carson City, NV 89706 U.S.A.
Technical Support Line:
1-800-854-8075
Fax: 1-775-885-4949
www.calculated.com
Software copyrighted and licensed to
Calculated Industries, by Construction
Master Technologies, LLC, 2006.
User’s Guide copyrighted by
Calculated Industries, 2006.
ProjectCalc
®
and Calculated Industries
®
are trademarks and registered trademarks
of Calculated Industries, Inc.
ALL RIGHTS RESERVED
Designed in the U.S.A.
U.S. Patent No. 6,721,623
6/07
PRG8503E-D
/
