This 18″ compass rule set includes the shaft, anchor point, lead holder and lead all in one package. Automatically measure radius, area and circumference. Calibrations are in inches on one side and metric on the other. This compass features ultra smooth edges and a solid feel without flexibility. The anodized finish gives a satin like feel, while the photo anodized calibrations are permanent and will not clean or rub off.
Features
- Makes perfect large circles up to 36 inches in diameter
- Allows precise measurement
- Attaches to thin profile yardsticks and automatically shows figures for the radius circumference and area of any circle in inches or centimeters
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