/ Precision Measuring Tools / Precision Hand Tools / Squares / Combination Squares / 435-24-4R * Not actual product image 51559 435-24-4R 24" Combination Set with Square, Center and Reversible Protractor Head and Blade 51559 Other similar products The Starrett 24" Combination Set with Square, Center and Reversible Protractor Head and Blade features reversible lock bolts, scriber, spirit level in both square head and protractor head, direct reading double 180 Deg protractor scale, hardened steel, photo-engraved blade. The combination set with square also includes a cast iron head with black wrinkle finish. Also available with satin chrome blade and protractor head. 24", 4R Grad. Features Specifications Contact Starrett 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 Regular Finish Blade Cast Iron Heads with Black Wrinkle Finish Specifications Blade Length (in): 24" Blade Finish: Regular Graduation Type: 4R Graduations: 8ths, 16ths, Quick Reading 32nds, 64ths Head Finish: Black Wrinkle Head Material: Cast Iron Head Types: Square, Center, Protractor Number of Pieces: 4 Protractor Type: Reversible