Drywall T-Square Base Length 22 in Base Width 2 in Blade Length 49 1/2 in Blade Width 1 1/2 in Blade Material Aluminum Graduation Mark Style Printed Graduation Marks - Base 1/8 in Graduation Marks - Blade 1/8 in Specialized Scales Reverse Reading Base Material Aluminum System of Measurement SAE Square Type T-Square Coating Clear Edge Style Square Features Flush for Cutting Finish Anodized Graduation Color Black Thickness 0.13 in Numeric Marks Inches Square Color Silver