I purchased a new thread plug [STI 10-24 2B GO/NO GO] supplied with a Certificate of Compliance. The CofC states "XYZ Company has measured this gage and has determined it to have been manufactured and inspected to all specifications as ordered, and found to be in tolerance using masters traceable to NIST", and the usual CofC legality wording. The manufacturer is also an A2LA registered laboratory. Could this considered adequate evidence of calibration, that this is a calibrated device, IAW AS9100C?