Drywall Scoring Square Base Length 20 in Base Width 2 in Blade Length 24 in Blade Width 2 in Blade Material Aluminum Graduation Mark Style Printed Graduation Marks - Base 1/16 in Graduation Marks - Blade 1/16 in Specialized Scales Not Applicable Base Material Aluminum Plastic System of Measurement SAE Square Type Drywall T-Square Coating Clear Edge Style Square Finish Unfinished Graduation Color Black Straightness Tolerance Not Applicable Thickness 0.63 in