When we establish datums, we use the high points of the feature to simulate how the part will be contacted in its assembly. In many assemblies the considered features, those being controlled with geometric tolerances, also contact mating features on the high points of mating surfaces. Sometimes it makes sense to apply the geometric control to a …
Don’t Forget the Tangent Plane (#200)
(In accordance with Y14.5M-1994 standard)
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