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 ruler features multiple coats of lacquer finish adding durability to this 12" long wood ruler. Single metal edge to preserve the edge when used for straight-line drawing or cutting. Scaled in 1\/16" on front and metric on back. 1 1\/8" wide x 1\/8" thick.