Swanson Tool Speed Square with Black Markings Blue Book

The Swanson? Speed??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??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??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.