Extra-strong stainless steel ruler can be used to cut paper! High-quality, hardened stainless steel has acid-etched, color-coded graduations. Cork backing prevents slipping. Also raises ruler from work surface to eliminate ink smearing and bleeding. Calibrated on 2 edges with inches and millimeters. Inch calibrations include 16ths, 32nds and 64ths and the metric calibrations include 0.5mm, 1mm and 0in.. Staedtler Rulers, Yardsticks & Tape Measures part of a large selection of office supplies. Staedtler(R) Stainless Steel Ruler, 18in. is one of many Rulers available through Office Depot. Made by Staedtler.