Hardened & Ground Flat Edge Tri-square
- • Single piece design made from imported OHNS.
- • Squares having accurate right angles both inside & outside.
- • Beams & Blades are accurately lapped for straightness & parallelism.
- • All squares are fully hardened to 55 HRC :i: 2 HRC.
- • Beam is grooved at inner corner for clearance of burns & dirt.
- • Packed in individual wooden Box.
Hardened & Ground Flat Edge Tri-square Specifications - AA-410