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 Cast Iron Heads with Black Wrinkle Finish SPECIFICATIONS Made in America: Yes Blade Length (mm): 300mm Blade Finish: Satin Chrome Graduation Type: 35 Graduations: mm and 1/2mm Both Sides Head Finish: Black Wrinkle Head Material: Cast Iron Head Types: Square, Center, Protractor Number of Pieces: 4 Protractor Type: Reversible