Thread Ring Gage Set Calibration Service When purchasing a new Thread Ring Gage Set, often times our customers need to have a Certificate of Calibration that is traceable to NIST to go with their new gages. Both Vermont Gage and Van Keuren Gage do not include a Certificate of Calibration with their Thread Ring Gage Sets off-the-shelf. This is a Service that needs to be ordered along with the gage at the time of the order. By adding this Calibration Service to your shopping cart along with the new gage, after the order is completed, the gage will be moved over to the Calibration Lab for the Calibration Service. Once the Calibration Service has been completed, the order will then ship out to the customer's location. When you order 1 Calibration Service on a new Thread Ring Gage Set, it will include 2 Certificates of Calibration, 1 for each Ring (GO and NOGO). The standard lead time for this Calibration Service is 1 week or less to ship out. Often times it is only 2 days. Optional ISO 17025 Accredited Calibration Service If you need the Calibration Service and included Certificates of Calibration to be ISO 17025 Accredited, please select that option from the pulldown menu.