Determine the aperture size from two Free Form Surfaces

[[Mi...]]

Hello Everyone,

I would like some input on a problem I've encountered. I've measured two surfaces as free form surfaces to determine
the diameter of the cylinder that will fit in the (X0, Y0) position. I've tried recalling points to a theoretical cylinder with Maximum Inscribed Element Evaluation and no luck. Here's a little illustration of what I'm working with, thanks in advance for your help.

ABEND-Aperture.jpgFetching info...

[[Ma...]]

Did you locked coordinates ( X and Y )? Switched to inner cylinder ( hole )

[[No...]]

Restricting X and Y may not be enough. If so, also restrict the vector.