GTCO QuikRuler II for Palm OS - Quick Start Guide - Manual (Page 5)

Example: A room is to have 2’ by 4’ ceiling tiles installed. After measuring the room’s area
as 320 square feet, tap ч 2 ч 4 = to determine that 40 tiles will be required.
Combining Measurements
Multiple measurements can be combined to provide a single result. For example, to
determine the gray area at right:
1. Measure area using outer perimeter A.
2. Tap on keypad.
3. Measure inner area using perimeter B.
4. Tap on keypad.
5. Measure inner area using perimeter C.
6. Tap to view the result.
Or: Area A – Area B – Area C = Gray area
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