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Question about this GD&T


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  • 2 weeks later...
I realize this is 10 days old now but I just saw it. I'm sure this is already finished but just FYI, if this is to ASME Y14.5-1994 then it is controlling the straightness of the centerplane of datum feature A, however I have no idea what the -55 means. If it's a 2009 standard print then this is not compliant and the term would actually be derived median plane.

As an observation, Symmetry cannot be modified at MMC nor can the datum references be modified at MMB so that callout is just incorrect.
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