I am sorry if this subject has been answered somewhere else. I could'nt find it with a basic search. I am the quality engineer for a company seeking ISO9001:2000 registration. We are reviewing our gage lab methods and are wondering: where it comes to our outside calibration (surface plates, comparators, scales, etc.) if the lab we contract these services to is A2LA "accredited", and ISO 17025 "certified", is it automatically known to our registrar's auditor that what they calibrate for us is traceable to NIST standards? Or do we need to get a statement from the lab to that effect?