This 18" compass rule set includes the shaft, anchor point, lead holder and lead all in one package. Make circles up to 36". Automatically gives radius, area and circumference. Adjust circle size with fingertip control. Calibrations are in inches on one side and metric on the other. Made from the highest quality aluminum for 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.
This nickel-plated steel compass withstands bending under pressure to maintain accuracy. The scale arm with easy grip-top control allows for two-sided 6" (15cm) measuring, and the compass makes circles up to 12" in diameter. The secure lock for the pencil allows quick adjustment as needed. Includes a 3.5" #2 (HB) golf pencil.
This do-it-yourself compass comes with a pin post and lead point that fit a standard soft wood yardstick and makes large circles and arcs with ease. Adjustments are made quickly, easily, and visually. For cutting circles and arcs, replace the lead with either a circle or stencil blade. Yardstick not included.
As an alternative to the Compass Rule, the Compass Point Kits can be used with your existing ruler or yardstick. The kits include the anchor point, lead holder and lead for drawing circles, plus a rotary knife for cutting circles. The straightedge size fits rulers that are 1/16" thick. The yard stick size fits rulers that are 1/8" thick.