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. This item has been restricted from sale in the following state (s): []