If It Isn’t Round, Use Profile of a Surface (#202)
(In accordance with Y14.5M-1994 standard)
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The very first Tip back in 1997 dealt with concentricity and told you, "When in Doubt, Use Runout." This is great advice where the feature is round and you want it to stay that way. I have been asked what to do with features that are shown coaxial on the drawing but are not round. If these features are features of size, they can certainly be …
