The ULTRA RULE Precision Protractor allows you to plot any angle with ease and absolute accuracy. Micro-fine marking holes are positioned at 45, 30, 22.5, 5 and 0.5 degree intervals, allowing you to place your mark with zero uncertainty. The Precision Protractor also features four angle scales, a removable T-Bar and a rule graduated in 32nds. Made of flexible stainless steel with etched black graduations.