Price Match Guarantee!
BIG 12 SPEED SQUARE W/LAYOUT BAR, BLUE BOOK The Big 12 Speed Square is a 12-in. version of the Swanson Speed Square with added features for building stairs. This innovative tool combines 7 tools into 1: 1. Try Square, 2. Miter Square, 3. Saw Guide, 4. Line Scriber, 5. Protractor, 6. Out-of-Square Corner Angle Finder, & 7. Stair Layout Square. The Big 12 Speed Square is die-cast for durability and accuracy. Made of heavy-gauge aerospace aluminum alloy, it is built to last. Black-filled gradations stand out against a matte finish for easy reading and are simple to use with the Swanson One-Number Method of rafter layout. This model includes the Swanson Blue Book for Roof and Stairway Layout as well as the Layout Bar for use in determining out-of-square corners when building stairways. The Swanson Speed Square is our most popular product and remains the most trusted square of its kind. Look for the Diamond cutout for genuine Swanson products.
- 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 guide with our One-Number Method to help make correct angle cuts for any pitched roof and bonus content for basic stairway layout.
- Features: 1/4 in. and 1/2 in. spaced scribing notches and the Diamond cutout for easy rafter seat cuts and scribing the most common and popular stud widths.
- Gradations included for marking common, hip, valley, and jack rafters. Useful for determining and marking angles and making square cuts on boards.
- Heavy-gauge billet aluminum alloy construction is die-cast for increased accuracy over laser-etched and extruded stamped rafter squares.
- Includes patented Layout Bar for repeated cuts and determining out-of-square corners.
- High-visibility, black gradations with a non-glare, matte finish for easy reading in any lighting conditions.
