This compact, self-measuring Rotape Beam Compass draws circles or arcs with a 3-1/2" to 72" radius. Set the tape at the desired radius, locate the center point and draw your arc or circle. The positive locking tape retracts into the compass body like a tape measure. It also works as a marking gauge for straight or parallel lines. Includes compass centering pin, collet and pencil lead.Features: Self-measuring beam compass Combines a measuring tape and pencil scribe in one pocket size tool Adjustable lead scribes a clean line Draws circles or arcs with a 3-1/2" to 72" radius Locking tape retracts like a tape measure Also works as a straight-line marking gauge Gauge slides along work for edge marking Made in the USA Specifications:Radius: 3-1/2" to 72"What's Included:(1) Rotape Beam Compass with centering pin, collet and 2 mm pencil lead