This high quality toolmakers' square offers squareness accuracy to .00020" (0.005mm) for every 6.0" (150mm).
They feature stainless steel construction on both the blade and the beam. Both blade and beam are hardened, ground and lapped, with the beam machined at the inner corner for clearance of burr or dirt.
3020 Squares are available in 3", 4", 6", 12" sizes and as a set of all four sizes.
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