Swanson Tool 12in. The Big 12 Speed Square With Layout Bar S0107, Swanson Tool Co, Mfr#: S0107

Ideal for deck construction, stairway layout, and for use with large material Heavy-gauge aluminum Instruction book included Layout bar for out-of-square corners and exterior step stringers Black gradations for easier reading Matte finish to prevent glare .25" spaced notches to facilitate scribing lines 12" length Carded Length: 12 Width: 1 Height: 12