Combination Square Number of Pieces 2 Head Type Protractor Blade Length (In.) 6 Graduation Type Inches mm Graduations 1/8 in. 1/16 in. 1/32 in. 1mm Head Material Cast Zinc Finish Black Blade Material Stainless Steel Blade Finish Brushed Features Permanently Etched Machined Square Reversible Head Lock Bolt and Steel Screw Hardened Screw-In Scriber Acrylic Vial