Swanson Big T0108 12 Speed Square Layout Tool

Features. Matte finish to prevent glare. 12 in. body to cover larger materials. 7 tools in 1 - Out of Square Corners Tri Square Line Scriber Miter. 14 in. spaced notches to facilitate scribing lines. Heavy grade aluminum. Matte finish to prevent glare. Plain gradations. Includes Swanson Blue Book of Rafter Length Roof Construction