From February 2026, NPL will no longer be providing certification of compliance for Reference Master gauges to American Petroleum Institute (API) specifications. Instead, customers seeking the API service should contact the UK National Gear Metrology Laboratory (NGML), who will be providing these services going forward.
If you wish to request API calibration services or learn more about NGML’s capabilities, please contact their team directly.
Stephen J Wilson
Tel: 0191 208 6192
E-mail: design.unit@ncl.ac.uk s.j.wilson@ncl.ac.uk
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