The Bullseye Compass features a transparent pivot point and a Quick-Set radius indicator with 2 radius holes for easy and accurate drawing of circles.Students can determine and draw the radius in customary or metric scales and even use the built-in protractor to construct and measure angles.Overhead and desktop models available.Compass is made of shatter-resistant SAFE-T.Plastic for years of use and measures 15cm L.Grades 3+.