I work in a company that outsources all of its calibration to various outside sources. What do I need to do in order to be able to accomplish simple calibration tasks in house and save on the outrageous costs of calibration? I am not looking to take away all outsourcing. But calibration of hand tools should easily be accomplished internally unless that is a violation of my ISO 9001 certification. I think as long as my master standard blocks, weights, etc. have been calibrated by an outside source and it is traceable to NIST, I should be ok at doing this, any opinions?