Westcott Drafting & 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. Details: 18" (45.72 cm) Stainless Steel Ruler Etched with 1/16 and metric markings Warp-free, bend-resistant stainless steel ruler Flexible for measuring curved surfaces Numerals and graduations are sharply delineated Non slip cork backing Hang hole for convenient storage Suitable for use in the home, school, shop or office