The newest addition to Alumicolor's long line of innovative drafting products. Invented by a practicing architect, this multi-use tool gives the user all the advantages of a traditional triangular scale in addition to many other features, all while solving the portability problem of its bulkier counterpart. Measure and scale drawings. Draw circles and arcs. Draw angles and triangles. Use as a cutting edge. Natural aluminum = architect, gold = engineer, black = combination architect/engineer.