Item # W3ASVLUPC: 038987001079

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 of Rafter Length and Roof Construction, and Layout Bar™ and hardware.
  • Matte finish to prevent glare
  • 12" body to cover larger materials
  • Packaged with the 60-page Swanson® Blue Book and Layout Bar™ with hardware
  • Used for laying out steps