Quick Set Bow Compass Art. 20592140

This is a high quality compass with automatic adjustment lever and  jointed legs. Fast estimated adjustment is made by adjusting a lever  found on either side of the leg. Finer adjustment is made by using the  strong center spindle. The extension bar can be attached to allow  for circles up to 23.6 inches (600 mm) in diameter. The pencil adapter  also takes pencils, colored leads or Indian ink refills up to 0.43 inch  (11 mm) in diameter. Quick Set Bow Compass: accessories: spare leads, extension bar, pen holder. Kit with spare parts also available.