When Inspecting Flatness, There Is No Datum (#180)
(In accordance with Y14.5M-1994 standard)
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Flatness is another geometric tolerance that is challenging to inspect. It requires isolating the feature from the rest of the part since there can never be a datum referenced with flatness. In this example, the flatness has been applied to datum feature A. Three possible inspection methods are illustrated. In all cases, the considered feature is …
