Features:
- Includes 2", 4", 6" (Beams are 1-1/2", 3", 4")
- Made of finest hardened Steel
- Designed for precision layout and measurement work
- Squares are true right angles both inside & outside
- Beams and blades are ground and lapped for parallelism
- Length of blade is measured from corner edge of beam to end of blades
- Protective case included