Work with probe

Are you able to build that error into a probing routine?

Get yourself a ring and probe it and whatever you're off with just the probing routine until it reads correct.

I guess it easier to cheat the ball size though

Is the error constant with probe velocity or does it reduce with speed?

(Supplementary question) Are you looking at the position that the probing move stops in, or the values in the probe result parameters?

Once I get to the shop, I'll come up with a video showing the response to all questions, perhaps you can spot something that I'm doing wrong

I have made some test measurements by jogging back and forth 0.01mm along with a plunge test indicator, you can see the results in the videos below:
Probe accurracy on X:
Probe accuracy on Y:
Probing the ballbearing:

The ballbearing has 32mm outside diameter and 14.96 inside diameter
The measured values along multiple cycles are:
31.9149 outside, 15.0250 inside
31.9178 outside, 15.0796 inside
31.9177 outside, 15.0770 inside

It seems that the inside measurements are about 0.1 bigger and the outside measurements are about 0.1 smaller.
The probe tip, measured with micrometer is 1.99mm
Any suggestions, any ideas?

vmihalca wrote: It seems that the inside measurements are about 0.1 bigger and the outside measurements are about 0.1 smaller.
The probe tip, measured with micrometer is 1.99mm
Any suggestions, any ideas?

Do you want to use the probe to measure things, or to locate them?

How well does the probe locate a hole? If the error is symmetrical then the hole centre will still be accurate.

Just to be clear, which probe routines are you using?