Use on chalkboards or whiteboards. Model drawing activities for the whole calss on a dry erase board or chalkboard as students follow along at their desks using Bullseye Compass No. 450058. Great for drawing geometric constructions, patterns, measuring angles and using a ruler, for drawing straight lines, drawing angles and more. Suction cups to the dry erase board or chalkboard to keep compass in place. Rotates freely on the board once suction cupped. Made of shatter-resistant Safe-T Plastic. Measures 19-3/4"L x 4-1/4"W.
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