Swanson The Big 12 Speed Square with Layout Bar

R599.00 incl.

The Swanson Speed Square’s big 12 Inch brother!

In stock

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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.


  1. Try Square
  2. Miter Square
  3. Saw Guide
  4. Laser Guide
  5. Protractor
  6. Out of Square Corners
  7. Line Scriber


  • 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!


  • 12 in. size
  • Packaged with the 44-page Swanson® Little Blue Book
  • Patented Layout Bar for use in determining out-of-square corners and stairway layout



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