Westcott Drafting and Drawing Tools are some of the finest products of their kind for students and professionals. The commitment to meticulous quality and cutting edge innovation in measurement and art materials has earned an unparalleled reputation. This recycled plastic ruler features a double bevel with pencil groove to eliminate smearing. Holes on ruler allow for use in a three-ring binder. 1/16" scale on one side, metric on the other. Ruler Type: Standard/Metric; Length: 12"; Standard Scale: 1/16"; Metric Scale: Millimeters.