The contracted supplier must provide and maintain an inspection system that is acceptable to General Dynamics Amphibious Systems and to the Government. All measuring and test equipment used by the contracted supplier, to inspect the items to be delivered against the contract, shall be calibrated utilizing standards whose calibration is certified as being traceable to the National Institute of Standards and Technology (NIST). ANSI/NCSL Z540.1 or ISO 10012-1, or equivalent is acceptable. The inspection system will be subject to the approval and periodic audits by GDAMS / GDLS to determine continued acceptability. The GDAMS contracted supplier is responsible for documenting and controlling any portion of this contract that is performed by the supplier or any other supplier performing work for the contracted supplier. GDAMS contract requirements would extend to the other suppliers when used.