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

Downloads

    Catalog 33 - Section 11 - Squares

    Invented by our founder, the combination square was our first product and today, our brand is considered to be the best available. This section offers a range of high quality solid squares, tri-squares specialty products and accessories that is especially broad and deep.

    Precision Hand Tools (Catalog 33)

    612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock.