Thanks for the quick reply pmarc.
The perimeter of the part that the holes lie on
will be controlled with a profile tolerance.
That being said, I would think datum -D- is not needed
and all holes should reference the same datum
reference frame..........thanks.
The only other real concern would...
How to properly dimension with gd&t holes on a perimeter.
Please see attached jpg.
my concern is the hole on the angle datum -D-.
All holes around the perimeter are related.
Should they be referencing the same datums?
thanks.