Hello All, I'm working at a smaller aerospace company on contract, and they are qualifying parts on a CMM. To me it seems to be within the tolerance zone of the machine. Is this a grey area or is it like I have been trained at other company's not a qualified measurement. 1.0000 - 0.9998 CMM Calibrated to .0002 From my previous experience it measure within two tenths 1.0000-0.9998 I would need a CMM calibrated to .00001 not .0002. Are many CCM's calibrated to this level or is this just a grey area where many measurements to .0000 are sometimes done within this range. How expensive is it to obtain a CMM that measures in .00001 millionths? Thanks for your thoughts. Just stumbled on this board today. Very good content keep up the good postings everyone.