To procure calibration services from a certified/accredited Commercial Calibration Activity (CCA).This SOW establishes the requirements that all calibrations provided by the CCA must meet to be accept... To procure calibration services from a certified/accredited Commercial Calibration Activity (CCA).This SOW establishes the requirements that all calibrations provided by the CCA must meet to be accepted by Portsmouth Naval Shipyard, in accordance with the requirements set forth by the NAVSEA Metrology and Calibration (METCAL) Technical Warrant Holder (TWH) directives (as directed in NAVSEA Letter Serial Number 09M/050 dated 07 Mar 2024).