Exton Granite Calibration Services, Inc.
For your Information:

Exton Granite Calibration Services, Inc. is a 100 percent female-owned small business serving companies in CT, DE, MD, NJ, NY, PA, and VA.

Exton Granite Calibration Services, Inc. provides on site surface plate calibration and resurfacing in accordance with Granite Surface Plate Standard MIL SPEC GGG P 463. All Technicians are trained, experienced surface plate specialists.

  • Quality System: A2LA Accredited ISO 17025( calibration )
  • Certifcate # 1905.01 ISO 17025 meets ISO requirements and ANSI/NCSL Z 540.1.
  • All equipment used in inspection of Granite Surface Plates is traceable to NIST.
  • Certificates and stickers for every plate that passes inspection.
  • Legal Name of Company : Exton Granite Calibration Services, Inc.
  • President: Mary Anne Whitehead
  • EIN Number: 23-2730122 Incorporated in state of PA July 1, 1993.
  • Dun & Bradstreet No.: 12-174-0807
  • Terms: 30 days -- copy of purchase order required to reserve service date.
  • Late Charges: Finance charge 1.5 percent after 30 days on balance due.
  • Late fee: $10.00 after 60 days plus finance charges on balance due. New Companies must submit Bank/Credit references to be billed.


    Contact Information:
  • Mail address:
    Exton Granite Calibration Services, Inc.

    P.O.Box 483
    Hatboro, PA. 19040

  • Ship address:
    Exton Granite Calibration Services, Inc.
    307 N. Penn St.
    Hatboro, PA 19040
  • Phone Numbers:
    (215) 675-5549
    1-(800) 737-8732 or
    1-(800) RESURFACE
  • FAX : (215) 675 7412
  • Email: Extongranite@aol.com
Exton Granite Calibration Services, Inc. now accepts
Visa, MasterCard, and American Express.