Overview
You can use the PatternMaking Calculator to perform standard operations for which you would normally
use a handheld calculator. This calculator performs basic arithmetic, such as addition,
subtraction, multiplication, and division. 
To Perform a simple calculation.
 Type the first number in the calculation.
 Click operator button ( +, , :, or x).
 Type the next number in the calculation.
 Click =.


To switch between Unit of Measurement (CM or Inch)

To convert to other unit of measurement, select the target unit. 1 INCH = 2.54 CM 

To Type In a Fractional Number

Decimal Fraction: e.g. 5.5 

Simple Fraction: e.g. 5.5 

Radius From Inner Circle
To calculate radius of a full, 3/4, half, or quarter circle, type in the length of the perimeter and press one of these buttons.

Radius From Full Inner Circle
Radius = 0.5 x Perimeter/PI 

Radius From ThreeQuarter Inner Circle
Radius = 2/3 x Perimeter/PI 

Radius From Half Inner Circle
Radius = Perimeter/PI 

Radius From Quarter Inner Circle
Radius = 2 x Perimeter/PI 
