Speed Bow Compass Set, 6 ½" Compass, 4 ¾" Compass, 6" Divider, Beam Bar and Pen Adapter

The compass and divider instrument set contains a 6½" compass with double knee joints for parallel leg positioning for drawing circles and arcs up to 12” diameter, a 4¾" bow compass in a hoop spring design for accurately drawing smaller circles and arcs. The Alvin compass set also has a 6" divider, beam bar for drawing circles up to 25” diameter, pen adapter, and spare parts tube. The complete compass set is packaged in hard, see-through plastic case with shipping weight 0.03 lb. shipping dimensions 8.50 x 4.25 x 1.00 inches