Want to Know How To Build Stairs?
Need Help with Building Stairs - Stair Stringers or Roof Rafters?
![3in1square](img/home_img.jpg)
To Use:
- Determine the rise and run (pitch) needed for the stringer or rafter.
- Set the dimensions on the 3n12 and tighten the wing nuts.
- Mark your wood using the 3n12 and cut.
The 3in 1square (3n12) is made of high strength polymer with an aluminum fence and is UV resistant. The 3n12 will not break, distort, or loose it's shape and has a 100% guarantee or your money back. The 3n12 is also guaranteed to save construction time, eliminate costly cutting errors, and frustrations when constructing stair stringers or roof rafters and has many other uses.