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G-85082 30" x 48" x 8" Surface Plate 85082

Discontinued ! - Superior Black Granite Surface Plate
30" x 48" x 8" Superior Black Granite Surface Plate - Grade AA, No Ledge

36” x 48” (900mm x 1200mm) Superior Black Granite Surface Plate with an 8” (200mm) thickness. Superior Black Granite has low water absorption, creates little glare and minimized thermal expansion Grade AA (Laboratory Grade) for precision operations in constant temperature gaging rooms and metrology departments. .000168” (0.0043mm) Flatness unilateral tolerance. Produced without ledges.
Note: This product is no longer available.

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  • Low water absorption minimizes the possibility of precision gages rusting while setting on the plates.
  • This black granite creates little glare resulting in less eyestrain for individuals using the plates.
  • Keeps thermal expansion to a minimum.


  • Made in America: Yes
  • Size LxWxT (in): 30 X 48 X 8
  • Grade (U.S.): AA Laboratory
  • Size LxWxT (mm): 750 X 1200 X 200
  • Ledges: No


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    Catalog 33 - Section 20 - Precision Granite Products

    Products and services range from standard surface plates and metrology accessories to engineering collaboration for unique solutions and complex assemblies. Our skilled technicians build your product in our state-of-the-art, environmentally controlled manufacturing facility.

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

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