Want to Know How To Build Stairs?
The 3in1square (3n12) is a new tool that takes the guess work
out of constructing/building stairs - stair stringers and roof rafters. The 3n12
provides a better visual aid than the framing square and makes it easy
to understand the concept of measuring and cutting stair stringers and
rafters. Simply set the dimensions for the rise and run on the 3n12
one time to mark all of your stair stringers and rafters.
Need Help with Building Stairs - Stair Stringers or Roof Rafters?
- 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.