FEATURES Reversible lock bolts, scriber, spirit level in both square head and protractor head Direct reading double 180 Deg protractor scale Hardened steel, machine divided blade Satin Chrome Finish Blade Forged and Hardened Steel Heads with Smooth Black Enamel Finish SPECIFICATIONS Made in America: Yes Blade Length (in): 24" Blade Finish: Satin Chrome Graduation Type: 16R Graduations: Quick Reading 32nds, 64ths, Aircraft Quick Reading 50ths, 100ths Head Finish: Smooth Black Head Material: Forged Steel Head Types: Square, Center, Protractor Number of Pieces: 4 Protractor Type: Reversible