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Is this GD&T callout illegal?
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Posted by: Doug Bailey

04/14/2003, 10:49:59

I have seen this callout on many drawings and it has always struck me as being odd. Its a true position callout with only ONE datum reference that refers to a 3 hole pattern. The 3 hole pattern itself is the B datum. |O|0.5(M)|A| 3 holeswhere O is true position symbol and A is the datum plane. Is this callout missing something, or is it trying to convey something OTHER then a true position.Is this just a mistake on the designers part?Please help.

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Replies to this message

-----Re: Is this GD&T callout illegal? Cragyon 1 769 bytes 04/14/2003, 12:57:36
----------Re: Re: Is this GD&T callout illegal? Doug Bailey 0 394 bytes 04/14/2003, 13:29:32
-----Re: Is this GD&T callout illegal? John-Paul Belanger 0 821 bytes 04/14/2003, 14:14:51

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