How to establish Datum Planes with two cylinders?

[Omar.]

Hello All,

I have two questions about establishing Datum planes with two cylinders. I have looking for an answer on Y14.5 2009 Std. But I can find anything that lead me to an answer.

I have attached a ppt for a better understanding of my problem.

I would really appreciate your help guys.

Thanks in advance.
Regards.

Omar R.