Westcott Drafting & Drawing Tools are some of the finest products of their kind for students & professionals. The commitment to meticulous quality & cutting edge innovation in measurement & 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.