Save, accurate and easy. Made with shatter resistant Safe-T plastic. Make perfect circle, arcs and construction using the unique features of the Bullseye compass. To use, simply place finger over the View-Thru compass/pivot point, move the Quick-Set radius indicator to desired setting with your opposite hand or drawing tool, place pencil/pen point in radius hole and swing an arc or draw a circle. 6 " long. Instructional Guide included. Grades 3 and up.