Swanson Tool Company Big 12 Speed Square W/Layout Bar, Blue Book

12-in version of the Speed® Square, made in the USA since 1925, is essential for every carpenter, construction professional, roofer, and DIYer

Multi-tool: try square, miter square, saw guide, line scriber, protractor, out-of-square corner angle finder, and stair layout square for what it does, the Speed® Square belongs on every tradesman's tool bench

Includes Swanson Blue Book a guide with our one-number method to help make correct angle cuts for any pitched roof and bonus content for basic stairway layout