Measurement Variance Between Two Probes

[[Pa...]]

Dear Expertise, 

I need your support regarding an issue I am currently facing. There is a significant measurement variance between two different probes:

1. Short probe – Ø3 length 85 mm
2. Long probe – Ø5 length 125 mm

The measurement differences are quite large even though the alignment remains the same.
We are using an RDS with a VAST XXT rotating probe system.

Could anyone please advise how to eliminate this error?

As below measurement table for your referance.

Feature        Circle3 (short)    Circle9 (long)     Difference (short - long)

X actual (mm)     -0.02173           -0.01202             0.00971

Z actual (mm)     -0.02633           -0.01052            0.01685

[[Ma...]]

I would start with calibration. If there is same problem even after calibration, then i don't know.

[[RP...]]

Cleaning and Re-qualifying would be what I would start with.  Are both scans being done with the same scanning settings?

[[Da...]]

Circle3 and Circle9 were not measured at the same Y position. Therefore, they cannot be compared.