Premium Material: This woodworking compass is made of solid aluminum alloy, the finish is , and it is more comfortable to use. Not easy to rust or break, corrosion resistant and durable. The extended circle drawing tool makes your operation more convenient, is a good helper for your work. Clearly-Mark: Circle marking tool is very delicate, adopts the laser-engraved markings, metric/inch are tender and clear identification, easy to read and measure. They 't smudge, fade, or disappear, with a size of 340 x 30 x 14mm. Easy To Use: All you have to do is to remove the screws, fix the woodworking compass on the plank, and then adjust the radius size, you can draw different sizes of the circles as your need. Moreover, you can use it as a little ruler. Circle pen design: The fixed pen can be stored at of the main body, saving your time for consolidation and assembly, so you can take it as you go. Widely Application: This Woodworking Compass Scriber has Metric and imperial Dual-Scale, suitable for woodworking, metal processing, decorative Design, Industrial Drawing and etc., quite flexible and convenient to use. Woodworking Compass Scriber, Portable Aluminum Alloy Circle Scribe Tool, Adjustable Metric/Inch Arc Drawing Ruler Circle Drawing Ruler Marking Gauge Compass for Woodworking Tool Feature: High-quality Material: Aluminum alloy material, simple and convenient daily maintenance, corrosion resistant and durable. Professional: A professional carpenter's compass is suitable for professional drawing, high precision and delicate. Adjustable: Adjustable radius size, you can measure or draw different sizes of the arcs and circles as your need. Dual-Scale: Metric and imperial Dual-Scale for easy adjustment. Circle Pen: The fixed pen is perpendicular to the center line, and fixed on the wooden board for use. Specification: Material: Aluminum Alloy Color: Red Size: 342 x 30 x 14mm/13.47 x 1.18 x 0.55in Scope of Application: Woodworking, Metal Processing, Decorative Design, Industrial Drawing Package Contents: 1 pcs x Woodworking Compass Scriber 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.