I have a part that has a flatness call out of .0002in to itself and a .002in perpendicularity to datum A over the surface of a slot that measures .275in x .551in x .039in deep. Our customer says that the flatness is out by +.0002. I have tried to repeat that but I am having trouble with setting this up and to be able to check the flatness of this feature to itself. The perpendicularity to datum A is is good with in .0005 - .001 depending on the part. does anyone have any suggestions to help me out?
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