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

20 Master Precision Squares
Steel Master Precision Square, 4-1/2"

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


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


    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.

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