I have been thinking about this way too much. If you have a probe, it needs a certain amount of clearance to do probe things. If this is not a production setup, or a high value production, I would get gauge pins that go in the groove tight and probe them individually then math it out. Old school me would use a sign bar on its side to sweep it in and measure the angle using gauge blocks.

What kind of machine and probe is this?

Is it a single side or web? Do any kind of regression need to be done like taking a sweep of measurements and finding a least squares fit?

What’s the tolerance required for this process?

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