I had a lot of problems to measure with a CMM-Ve (about 2mm of difference between a point measured with contact and with CMM-Ve !!!!!).
I searched where was the problem (MR3 ? CMM ? programm ?...), and finally, I found that there are 2 CMM-Ve TESA in the probe.dat, with the same name, but with a different optical center !
Offsets are different, so measurements are very different !!!
about 2mm of difference between a point measured with contact and with CMM-Ve ???
Calibration needs to be very carefull when using ttp + cmm_ve.
For example, if you answer "yes" to the question if the sphere had moved, then other calibrations go away. I don't understand exactly why, it's only what I see !!!!!