Calibration for precision tolerances in a fixture

[MDV_AERO]

Good morning,
I have a fixture with 4 holes. We are trying to dial it in to .0002 in position.

Never mind the part is dirty with fluid and dykem. Which I will have to clean up before.

What is the best calibration practice for ultra precision inspection?

Thanks!
M

I

[Schrocknroll]

Calibration should not affect position unless you are using different tips for the holes. What will affect it most is cleanliness, which you are taking care of, and temperature.

[MDV_AERO]

Thanks!
We were eliminating some questions about accuracy.