50136

20-12 Master Precision Square 50136

The Starrett 20 Master Precision Square is the finest precision-checking square. Squareness accuracy to .0001" (0.0025mm) every 6" (150mm). This hardened steel square is used when extreme accuracy is required. The beams and blades are hardened, ground and lapped to ensure parallelism and straightness. The beam is grooved at the inner corner for clearance of burr or dirt. Made of high quality tool steel, with the finest of craftsmanship throughout. 12" (300mm) Blade, 7" (180mm) Beam.


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Features

  • The finest precision-checking squares - not graduated. Squareness accuracy to .0001" (0.0025mm) every 6" (150mm)
  • These hardened steel squares are used when extreme accuracy is required.
  • The beams and blades are hardened, ground and lapped to ensure parallelism and straightness.
  • The beam is grooved at the inner corner for clearance of burr or dirt.
  • Made of high quality tool steel, with the finest of craftsmanship throughout.

Specifications

  • Blade Length (in): 12"
  • Blade Length (mm): 300mm
  • Beam Length (in): 7"
  • Beam Length (mm): 180mm
  • Material: Steel

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    California Proposition 65 Warning

      WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov