Starrett® 13A Double Square with Hardened Graduated Blade, 4 in L x 1/16 in thick, 4R - Quick-Reading 8ths, 16ths, 32nds, 64ths Graduation, 45/60°

Starrett® Double Square, Series: 13 Series, 4 in L x 1/16 in thick, Graduations: 4R - Quick-Reading 8ths, 16ths, 32nds, 64ths, 45/60° Measuring Angle, Measuring System: Imperial, 2-9/32 in Tongue, 31/32 in Width, 7/16 in Thickness, Steel, Plain. Starrett® 13 squares are very popular with machinists, toolmakers and patternmakers. The sliding blades are adjustable making it practical for a wide variety of uses. The faces of the head are ground square.