An all-in-one drafting and measuring tool, the Alumicolor Alumidrafter does more than just draw straight lines. Use it to measure and scale drawings, to draft circles and arcs, and to draw angles and triangles. The two-sided tool has 16 calibrations, featuring all the standard measurements an architect or other user could need. Small holes hold your pencil in place as you create circles and arcs. The tool allows for circles with diameters ranging from 1/2" to 24" in 1/8" increments. For angles and triangles, you can work in 15° increments. Designed by an architect, the innovative 12" Alumidrafter also works as a cutting edge. Unlike a traditional triangular scale, this tool is flat for easy transport and storage — or hang it in your workspace by its center opening. The Alumicolor Alumidrafter Drafting and Measuring Tool is 1-1/2" wide and 0.22" thick. It's made of durable anodized aluminum.