The Big 12® is seven tools in one: a framing square, try square, miter square, protractor, saw guide, stair gauge and out-of-square corner angle finder. It’s constructed of heavy-gauge aluminum alloy and includes the Layout Bar for use in determining out-of-square corners. Also included are the Swanson® Blue Book for roof and stairway layout and Layout Bar with hardware.

Features

• Heavy gauge aluminum alloy
• Matte finish to prevent glare
• 1/4 in. and 1/2 in. Spaced notches to facilitate scribing lines
• Black gradations for easy reading
• Patented Layout Bar
• Great for deck framing and stairway building!