Ideal for artists, architects, engineers, educators, craftspeople, woodworkers, quilters, and pattern makers, the Koala Tools Ring Ruler 360 is the first
Expanding and contracting the Ring Ruler 360 feels natural and ergonomic. It's quicker and safer than using a needle compass, and it also provides the more useful circular metrics of diameter and arc length/circumference.
One of the best features of the Ring Ruler 360 is its simplicity. This makes it a great learning tool for students — especially those too young to handle a compass.
The Koala Tools Ring Ruler 360 is offered in your choice of US standard and metric scales.
® Koala Tools is a registered trademark. ™ Ring Ruler 360 is a trademark.