0-360 arbitrary angle, easy measurement, for repeated measurement or drawing arcs and circles. The fixed pen can be stored at of the main body and can be put in a pocket or bag. This professional woodworking scribe is made of solid aluminum material that 't break from bending or rusting, more durable and stronger than plastic scribes. Thanks to the laser-engraved markings, you'll be to read measurements clearly for years to come. They 't smudge, fade or . Simply position the pivot point at the center of the arc or circle on the wood, then you can draw different sized circles as you wish. This woodworking arc drawing ruler is a professional woodworking tool for woodworking, metalworking, or leatherwork. Color: Red Material: aluminum alloy Package Contents: 1 x Circular painting round rules Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.