T-Square Base Length 10 1/2 in Base Width 2 in Includes Measuring Blade Length 24 in Blade Width 2 1/2 in Blade Material Plastic Graduation Mark Style Printed Graduation Marks - Base 24 in Graduation Marks - Blade 24 in Specialized Scales Not Applicable Base Material Plastic System of Measurement SAE Square Type T-Square Coating Clear Edge Style Square Features Hang Hole Ideal for Inking Finish Painted Graduation Color Black Straightness Tolerance Not Applicable