Swanson S0107 12-Inch Speed Square with Blue Book - Aluminum, Notches

The Swanson Tool S0107 12-inch Speed Square is a compact, all-purpose layout aid that fits in the palm of your hand. Built from heavy gauge aluminum alloy, the square is sturdy enough for daily job-site use while the matte finish eliminates glare, so you can read markings clearly even in bright outdoor conditions. Two sets of notches spaced at 1/4 inch and 1/2 inch let you scribe precise lines for framing, decking, and stair construction without guessing measurements. Black gradations across the face provide high-contrast reference points that are easy to read at a glance. A patented layout bar runs the length of the tool, giving you a reliable guide for marking angles, cuts, and layout lines. Whether you are building a deck, framing a stairway, or laying out a simple wall, the layout bar speeds up the process and reduces errors. The included blue reference book explains common layouts and offers step-by-step tips, making the square a valuable addition for both seasoned carpenters and DIY enthusiasts who want accuracy and speed on every project.