Swanson Tool Company Swanson 7 in Pro/Anniversary Speed Square with Blue Book 1

The Swanson® Speed®Â Square was first developed by company founder Albert Swanson in 1925. This innovative tool combines 5 tools into 1: 1. Try Square, 2. Miter Square, 3. saw guide, 4. line scriber, and 5. protractor. The Speed®Â 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. The Speed® Square includes the Swanson®Â Blue Book of rafter length and roof construction and also features markings for using the Swanson® one-number® method of rafter layout. 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.