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How does the CMM calculate profile?


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This is great. Confusion was why does is it multiply by 2. If the actual dimension deviates .300 from nominal, why does at measure at .600 profile.  Thank you for your explanation on this. I appreciate it.

 

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All GD&T values are zone of tolerance, not a pure linear deviation. 

So a +0.300 deviation from nominal results in a 0.600 zone of tolerance consumption of the profile. 

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