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SeasonLee said:If 2X notation added on the 1st figure and followed the way of Fig 10-52, the two holes(with different size) will be a pattern, can we specify them as a datum feature?
axym said:For example, the 2 coaxial cylinders in Fig. 7-59 have 2X a size tolerance, and a position tolerance applied to them. They are still treated as 2 distinct features - we would evaluate the size of each cylinder individually, and find the axis of each feature (not a combined axis).
Axym said:I'll need to read through this thread carefully before giving an opinion. I see that there has been discussion on leader lines and the lack of the 2X grouping mechanism in the 2nd scheme.