20-4 1/2 Master Precision Square, 4-1/2" Blade 50132

Master Precision Square is the finest precision-checking non-graduated square with accuracy to .0001" (0.0025mm) every 6" (150mm). This hardened steel square is used when extreme accuracy is required.

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  • The beams and blades are hardened, ground and lapped to ensure parallelism and straightness
  • Made of high quality tool steel, with the finest of craftsmanship throughout
  • The beam is grooved at the inner corner for clearance of burr or dirt


  • Blade Length (in): 4-1/2"
  • Blade Length (mm): 115mm
  • Beam Length (in): 3-1/2"
  • Beam Length (mm): 90mm
  • Material: Steel