PMC Lone Star is the leader in Gage Calibration and Thread Inspection Certification!

PMC Lone Star’s laboratory in Willoughby is accredited by A2LA to ISO/IEC 17025. “General Requirements for the Competence of Testing and Calibration Laboratories”

We offer thread inspection and gage calibration certification for both new gages and customer property gages. Gages are certified accurate and traceable to the National Institute of Standards and Technology (NIST). We are licensed to API Specs 5B , 7-2,  &  11B  and can provide API thread inspection and gage calibration services.

PMC maintains specific regional master gages for recalibration of customer API Specification 7-2 reference master gages.

For over a half a century PMC Lone Star has been the trusted leader for gage calibration and thread inspection certification. PMC Lone Star’s state-of-the art, environmentally controlled calibration laboratory is prepared to service all your calibration needs:

We offer calibration and repair services for most API plug and ring gages as well as dimensional thread gages.
Re-Calibration Requirements

Our labs are electronically regulated to ensure consistent accuracy of our calibration equipment and our Management and Staff are committed to achieving total customer satisfaction, on-time delivery and service reliability by continually monitoring and improving our Quality system. We would be glad to provide you with any additional information that you need.

Fastest Turnaround Around! PMC Lone Star Gage calibration orders are turned around very quickly.

Need it Rushed? We do offer 24-hour or 48-hour turnaround on calibration orders at an additional fee.

Dimensional Gage Repair & Calibration – PMC Lone Star provides complete repair services for many types of dimensional measuring equipment. Every gage received into our laboratory is cataloged, cleaned and lubricated as necessary. It is our policy to quote all repairs and to obtain authorization from our customers.

Dimensional repair and calibration services include but are not limited to the following:
See Re-Calibration price list

Calibration is the comparison of an instrument to a known standard .Proper calibration involves use of a NIST traceable standard – one that has paperwork showing it compares correctly to a chain of standards going back to a master standard maintained by the National Institute of Standards and Technology. Suggestions of when to calibrate:

  • Before a major critical measuring project – be prepared with calibrated gages before the project begins!
  • After a major critical measuring project .
  • After an event – If your instrument absorbed a particularly sharp impact – send it out for calibration and have the safety integrity checked as well.
  • Per your quality requirements
  • Monthly, quarterly or semi-annually
  • Annually
  • Bi-Annually

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