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Weird numbers from Romer at machine

GOFOBROKE
Has anyone seen weird numbers out of their Romer Arm in tight spots (close to the arm) at the machine? We could not get the Romer to check anywhere near close to the hand gages (Verniers, PiTape) at the machine (.005-.010) undersized... I brought 3 smaller diameters to the machine, never moved the Romer Arm, and they checked perfectly, one of them was a Ring Gage and the Romer checked it within .0001... While taking points on the actual part, we had the arm in some contorted positions, but it still allowed us to take the points, which makes me curious if anyone else has had the same issue??? The inspectors first thought was a calibration issue, then a setting in the software, but I could not find any abnormalities with it...

As added info, we tried moving the arm on the machine, re-calibrating and even tried mounting it outside the machine on something, but didn't have anything sturdy enough to keep it locked in place...
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  • Coming to the game late here but it could be an interference issue. I never suggest mounting arms directly to the machine since it can cause all sorts of grounding / interference issues especially when using bluetooth but not limited to. Measuring at the limits of the encoders should not produce bad numbers unless something is wrong with your arm.

    I was referring to the fact that the arm is incapable of measuring at the limit of the encoder (it causes a live message on screen saying an axis is at the limit, and will not allow data to be collected at all.) Not that the arm might have issues of accuracy near the limits. Near the base of the arm is when the machine is in home position, and you are unlikely to collect much data very near the base of the arm (which a hard probe can't even physically reach.)
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  • Coming to the game late here but it could be an interference issue. I never suggest mounting arms directly to the machine since it can cause all sorts of grounding / interference issues especially when using bluetooth but not limited to. Measuring at the limits of the encoders should not produce bad numbers unless something is wrong with your arm.

    I was referring to the fact that the arm is incapable of measuring at the limit of the encoder (it causes a live message on screen saying an axis is at the limit, and will not allow data to be collected at all.) Not that the arm might have issues of accuracy near the limits. Near the base of the arm is when the machine is in home position, and you are unlikely to collect much data very near the base of the arm (which a hard probe can't even physically reach.)
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