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Effect of datum precedence

Question asked by Tran Van Quang on Apr 30, 2018
Latest reply on May 2, 2018 by Tran Van Quang

Hello every one,

I’m sorry for posting this question again.

I don’t undertsand about the precedence of reference datum in this drawing.

I asked my colleague and he just say it obeys principle of MMC.

I wonder without  regarding to MMC, is there any diffrence if I change the order of reference datum  in tolerance frame.(X,A,C to A,C,X)

 

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