Product DescriptionThe Swanson Tool Speed Square S0101 is a versatile and reliable layout tool designed for carpenters, contractors, and DIYers who demand accuracy on every project. Crafted from heavy-gauge aluminum alloy for durability, this classic speed square functions as a try square, miter square, protractor, and saw guide—all in one compact tool. The bold black markings are easy to read and help ensure precise measurements and clean angle layouts for framing, roofing, stair building, and general construction tasks. This carded set also includes the Swanson Blue Book, a trusted pocket-sized guide filled with helpful instructions, angle charts, rafter tables, and layout tips to simplify common construction calculations. Whether you’re making quick cuts, marking angles, or laying out rafters, the Swanson Speed Square provides dependable accuracy and efficiency on the job site or in the workshop. Built for long-lasting performance, it’s an essential tool for professionals and home improvement enthusiasts alike.From the ManufacturerThe Swanson Tool SO101 7-inch Speed Square is a popular pocket-sized square that incorporates features of the framing square, tri, miter, and protractor squares. Common rafter and hip/valley rafter scales permit one-number references for all cuts. The square is merely rotated to the proper roof pitch value on either scale to assure the correct angle cut. The slot along the scales will accommodate an adjustable locking pin for repetitive cuts using any 1/4-inch bolt and nut. Comes with a handy, 62-page pocket sized booklet that provides vital instructions, reference diagrams, and tables for the construction of roofs and stairs.