Help with Position Call out for this drawing

[[Te...]]

How would I correctly dimension this?

I have a Plane for Datum A, a bore Ø for Datum B and 2 Pin Ø's that make up Datum C.

I want a position to A and B but not sure if I need to separate them into two Ø's and make all the other positions to | A | B | C1-C2 | or if the Ø's treated as a pattern (2 x) is OK. I think it is but want to make sure.

I was going to just use POS | Ø 0.1 MMC | A | B | is that enough or do I need to add a composite under it to restrain further?

The 2 pins is what stop rotation and I think this would be enough.

Any help would be greatly appreciated. Pardon the sketch I had to use WORD. 😃

All I want for Calypso is to use a 3d Line from the 2 Ø's for the planar rotation. Trying to get another Alignment out of the CAD Cube for training. 🙄

Position Question.JPGFetching info...

[[De...]]

If there is nothing else that you also need to use the C datum for, then

POS | Ø 0.1 MMC | A | B
2 Places

will work because they both have the same call out to the same datum reference frame with the same modifiers they are a simultaneous requirement so they basically become the datum.

That said if you have other things that you want to also tie to the rotation provided by C then you might want to specifically define the C datum so that other features do not need to be considered when determining rotational location.

[[An...]]

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[[De...]]

On the original example, the two holes were centered on the datum Axis, on your example they are not, that makes all the difference.