Carpenter Square Base Length 8 in Base Width 1 in Blade Length 12 in Blade Width 1 1/2 in Blade Material Steel Graduation Mark Style Stamped Graduation Marks - Base 1/16 in Graduation Marks - Blade 1/16 in Specialized Scales Not Applicable Base Material Steel System of Measurement SAE Square Type Framing Square Coating Clear Edge Style Square Features Permanent Stamped Graduations Finish Powder Graduation Color Silver Straightness Tolerance +/- 0.005 in Thickness 0.09 in