Some of the data I’ve noted from the AMTMA studies make it very clear that measurement disputes will continue. When the range of readings is close to or exceeds the tolerances of the gages being calibrated, it is a certainty. Further problems will occur due to unrealistic expectations by all the parties involved in a dispute.
Gage users often believe that the gage tolerances in the standards are a simple matter, easily achieved when test after test shows this is not the case. All too often, gage users specify higher levels of accuracy than required for an application for a little extra insurance. In practical terms, this higher level may never be achieved but the gage user usually has no way of knowing this. And if it was achieved, the environment in which a gage is used may be such that the extra precision expected of the gaging process goes out the window.