There is a newer version of this product available
* Not actual product image

G-85016 12" x 18" x 3" Surface Plate 85016

Discontinued ! - Superior Black Granite Surface Plate
12" x 18" x 3" Superior Black Granite Surface Plate - Grade B, No Ledge

12” x 18” (300mm x 450mm) Superior Black Granite Surface Plate with a 3” (750mm) thickness. Superior Black Granite has low water absorption, creates little glare and minimized thermal expansion Grade B (Toolroom Grade) for production checking work throughout the shop. .000200” (0.0050mm) Flatness unilateral tolerance. Produced without ledges.
Note: This product is no longer available.

Product Testimonials

Contact Starrett


  • 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): 12 X 18 X 3
  • Grade (U.S.): B Toolroom
  • Size LxWxT (mm): 300 X 450 X 75
  • Ledges: No


    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.

    Precision Hand Tools (Catalog 33)

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

Product Testimonials

    Write a product review