I can top that one. This was done by one of the inspectors I work with:
A 2" diameter bar is going to be welded to the of these 2 tubes to create an "A" shaped support. We needed to verify there was enough stock to cut radii into them for the 2" bar to fit. This guy literally cut a 2" diameter piece of card stock, taped it to the end or the CMM probe, and positioned it to where the 2" bar would be located. This picture was one of 3 from his official report verifying the extra stock was present.
Somebody dropped a fixture here and the datum holes shifted to the point I couldn't certify the fixture. The QM asked me if I could just pick different holes for the datums to certify the fixture to... Unbelievable.
For mine... My programmer hit a wall in checking a slot that has a tolerance of 10° (ten degrees), and the supplier wasn't shy about using it. I thought to put a ton of prehit / retract and the program still had a hell of a time gettting through it. The result needed a double check on this 1 off repair, for which we don't have adequate tooling to hold it so I used an angle block to butt up the rear face (is 180 the datum, close enough) then level out 2 slots and indicate off the top of the OD (2nd datum)... do the same thing after flipping the part 180 indicating off the 2nd datum and noting the difference. Draw up a couple of triangles and bam,ship it! Thank God the position of the slot means nothing to the operation of the part.
KatmandudaMeow yes it is. How else do you expect to attach a card stock circle to you probe? The operator has 40+ years experience, he knew EXACTLY what he was doing.