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