5 Tools in One! One-Number Method Try Square, Miter Square, Protractor, Line Scriber and Saw Guide The ever popular Swanson S0101 Speed Square incorporates features of the framing square, try square, miter square and protractor. It makes an ideal saw guide, an essential tool for the professional builder and handyman. It features a die cast aluminum alloy, "anti-glare" finish, black filled markings. Includes book of rafter lengths and roof construction. 7" x 7" x 1" size.1/4" spaced notches to facilitate scribing lines Black gradations for easier reading Matte finish to prevent glare Heavy-gauge aluminum alloy Packaged individually, blister card, with Swanson Blue Book of instructions Made in USA