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Assuming A|B|C precedence, do you think that this drawing would convey I want my XY origin centered at Datum B, and my datum axis to be offset by 10° from Datum C? The reason I ask is because a customer has a similar situation where measuring in a straight line from B to C is wrong, but...

What I want is for it to be measured like this, but I don't know what I need on the drawing to convey that.

I guess I am having difficulty conveying it. I need to know if my interpretation of the datum reference in the very first drawing would be as shown here. If that is correct then I can explain what I want. If it isn't I need to know why. .

Would a basic angle solve it? Something like this so when measuring the offset is known?

Wouldn't the assumed rotation then be a straight line from B to C instead of normal to the drawing as shown?

Hi all, I want to know if there is a correct way to offset the rotation between two datum holes. See the attached drawing. Basically i want to measure both datums, but have the rotation between them offset to the specified basic distance. Is there a way to do that correctly per ASME? I couldn't...

I think that it does not. My question is basically this: In a composite position tolerance, do the datums have to be outside the pattern of features? My feeling is yes, because otherwise the PLTZF doesn't really work, the pattern location references itself, but I can't find any hard answer on...

A customer has given us free reign to pick our Datums since the drawing they provided had ones that were not GD&T compliant. They want true position of bosses in a pattern. My question is can the datums be within that pattern, i.e the bosses themselves. I don't like how we have it set up now...