![]() ![]() So these tolerances end up only controlling the orientation and form of the end surfaces, and thus could have been Perpendicularity tolerances instead. ![]() The profile tolerances on the two ends of the part don't control the location of the end surfaces (because they each reference only the local axis). It's hard to tell whether the end of the part is at PT A or not, because the extension lines for the dimension look identical to the object lines for the part geometry.Ģ. There are other things on the drawing that I would have issues with:ġ. It looks like the issue is that the CMM software does not support that particular combination. The combination of A and B creates a valid multiple datum feature (now called a "common datum feature" in ASME Y14.5-2018). I would say that the A-B reference is okay in terms of compliance to the ASME Y14.5 standard.
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