-Rugged, Lightweight Aluminum Alloy
-Precision Cast Measurement Markings
-Roof Pitch and Angle Markings for Fast and Accurate Framing Measurements
-Dual Raised Guide Edge Aligns Square and Slides Along Board to Next Mark
-Use as a Framing and Tri-Square, Protractor, and to Mark Mitre Cuts
-Bonus Instruction Manual for Rafter Lengths and Roof Construction
-Lifetime Warranty