Swanson Speed Series T0101 Square, Aluminum, 7 in L, 7 in W

This unique tool is actually five tools in one like a try square, miter square, protractor, line scriber and saw guide. The speed square is constructed of durable heavy-gauge aluminum alloy. Includes markings for Swanson's one-number MethodSM of rafter layout and is packaged with the Swanson blue book of rafter length and roof construction.