Mitutoyo Universal Bevel Protractor 6" Mitutoyo Universal Bevel Protractor with 6" blade and clamp box for inch height gage. Features include... Graduation: 5 min (0°-90°-0°) 6" Blade 2.56" / 70mm Diameter High precision angle gage for accurate angle measurement of machines, molds, and jigs. Can be attached to height gages.