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Unequally Disposed Profile
2

Unequally Disposed Profile

RE: Unequally Disposed Profile

2
That would be an "Unequally Disposed Profile Symbol" which becomes a unilateral profile, since it's a tolerance that only adds material from the nominal. It creates a tolerance zone of .008 units in size, starting at the nominal and extending .008 units away from the nominal surface in the "adding material" direction.

I do not believe there should be a vertical line preceding the second .008 - that's all part of the same 'box' / 'definition' with the (U) symbol.

That is, of course, coming from 2009 of Y14.5 since it's the one I'm most familiar with. Others may vary.

For the 3 year old:

That's a camel's back symbol! The camel's back means the part gets a BIG HUMP on it that's EIGHT BIG!. It can't get smaller because the camel will get sick :( but the camel can get a hump that's 8 big! Bigger than 8 and he might POP! And that'd be bad. We don't want the camel to get sick OR to pop ! We like the camel when his hump is flat or up to 8 big.

_________________________________________
NX8.0, Solidworks 2014, AutoCAD, Enovia V5

RE: Unequally Disposed Profile

(OP)
Lol thanks for the clarification. :)

RE: Unequally Disposed Profile

JNieman is correct on all counts. It means the tolerance zone extends outwards from the true profile so any variation results in extra material. There should not be a vertical bar after the circle U and the second appearance of the .008. This is new to the 2009 standard. It does not appear in the 1994 standard. It did, however, originally appear in ASME Y14.41-2003.

John Acosta, GDTP Senior Level
Manufacturing Engineering Tech
SSG, U.S. Army
Taji, Iraq OIF II

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