So I've come across this before and never really know how to deal with it. I have a positional callout of a cylinder feature of .01 to its datum (DAT A). Datum A is the plane surface normal to the cylinder. My question is how would I give a position of this cylinder back to a surface that is perpendicular to the feature. Where would I put my xy 0. To me this always seems like it should be a perp. callout but maybe I'm not understanding something. Any help appreciated.
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