Not necessarily CMM related. Lets say I have a part with an OD with a size callout of Ø1.500 +0.001/-0.000 and the surface has a taper of about 0.002 over the length of the part. At the one end it measures 1.4997 and at the other end it measures 1.5012. How do you report the size of the dimension?
On the QC sheet I do I basically just have a box to input one number. So I can report a single number and say 'OK' or 'NOT OK'. What it usually happens is I will put one number that I think makes sense, like the largest an OD is since it might mate inside of something and then a machinist will measure the small end and say I'm wrong the part is good.
