Double Square, 3-1/2x9/16 In, 4R Grad, 2 Pc, Starrett, Mfr#: 13A

Double Square, Number of Pieces 2, Blade Finish Satin, Blade Material Steel, Head Length 3 in, Head Width 9/16 in, Blade Length 4 in, Blade Thickness 0.08 in, Blade Width 3/4 in, Graduation Mark Style Etched, Graduation Marks – Front 1/64 in, Head Type Square, System of Measurement SAE, Includes Graduated Blade, Head Vial Included Yes, Accuracy +/- .0025 in, Blade Coating Chrome, Features With Graduated Blade Only, Graduation Color Black, Graduation Scale 4R, Graduation Units Inches