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