6" Pro Bow Compass & Divider SetTwo drafting essentials in one great set! This set contains one 6" divider and one 6" bow compass. Each instrument is made of rolled brass with a durable nickel-plated satin finish. The compass features an accurate center wheel adjustment with a built-in spindle stop to prevent overextension. It can be used to draw circles up to 16" in diameter. The set additionally contains two replacement leads and comes packaged in a re-usable plastic case.