4 outside holes are mounting holes for connecting this part to the next higher assembly. Two large holes in the middle are o-ring lands that also mate with the next level assembly. 4 inner holes mate to a sub assembly on the far side of the part. That's about all I can tell you.
I have attached a portion of a drawing I am making at work. No one at work knows any GD&T so I am asking you to critique. My main question is: How do I use the mounting holes (4 outside corner holes) as datums, but also dimension their position using GD&T. Like most of you know, everyone is...
