Carpenter Square Base Length 24 in Base Width 2 in Includes - Blade Length 16 in Blade Width 1 1/2 in Blade Material Steel Graduation Marks - Base 1/8 in Graduation Marks - Blade 1/8 in Specialized Scales Reverse Reading Base Material Steel System of Measurement SAE Square Type Framing Square Edge Style Square Features Reverse Reading Scale Finish Brushed Numeric Marks Inches