Product Description: Quantity: one piece Color: Black Multifunctional Triangle Ruler: Multifunctional carpenter's square tool with the 5-in-1 tool features: ruler set, angle profile, vernier caliper, protractor and drill guide, Instead of taking tedious measurements with multiple tools, a must for any toolbox. High quality material: carpenter square is made entirely of aluminum with a thickness of 4mm, high hardness, strong toughness, allowing sturdiness to foolproof. Easy to use: Metric carpenter's square with metric triangle stopper saves a lot of time on your woodworking and construction sites. Widely used: this protractor square ruler can be used to measure angles, check squares, adjust guides sawing, sawing, drawing circles, laying out plank marks, leveling, finding roof pitches and much more. metal multi-tools are professionally calibrated before production. perfect for professionals and do-it-yourselfers