12" Swanson Tool Speed Square w/ Layout Bar & Blue Book (Big 12) $10 at Lowe's w/ Free Store Pickup

12" Swanson Tool Speed Square w/ Layout Bar & Blue Book (Big 12) $9.98 at Lowe's with Free Store Pickup. Heavy gauge aluminum alloy with matte finish to prevent glare. 1/4 in. and 1/2 in. spaced notches to facilitate scribing lines.