I have a problem with the "SP600" probe head.
The diameters are, regardless of whether they are scanned or with an auto-element circle, it is always exactly 0.010mm smaller than it should.
Tested on a purchased ring with a certificate
Calibration says 1my standard deviation.
Maintenance says everything is ok.
Temperature compensation is off, but the room temperature is 20.5 ° C
Is it possible that the calibration is set incorrectly?
or is it a hardware error?