Composite Position Calculation on a 12 X 4 Hole Pattern

[scansncrayons]

maybe it's the same bc they want to use datum's A & C sense they don't line up in the frame. i know thats one of the rules. ty for the quick response helps a lot.

 

[Robnrbrtsn]

Does it look like
4x[Ø3]A]B]C]
[Ø1]A]B]C] ?

I believe this would mean a position for all within 3mm, and the pattern together within 1mm. Not seeing the print, I'm guessing...