Starrett C33H-6-4R 6-Inch Combination Square with Forged and Hardened Steel Head With reversible lock bolt, scriber, spirit level Graduation: No. 4R - 1/8", 1/16", quick reading 1/32", 1/64" The square head are forged hardened steel with smooth black enamel finish Square blade easy-to-read, sharp graduation Bearing surface is accurately ground Starrett 6-inch combination square with forged and hardened steel head, satin chrome blade, and smooth black enamel finish Get better accuracy and greater efficiency when making measurements Features easy-to-read, sharp 8ths, 16ths, 32nds, and 64ths graduations Square blades are machine divided, hardened and tempered for long life 1-by-0.7-by-6.6-inches and ships at 4.8-ounces; backed by Starrett 1-year limited warranty