I realize there has been several of these threads but the more I read the more I get confused. Unfortunately there is no one where I work to go to with these questions. For the longest time I was always under the assumption that "concentricty for the most part will be half your tir" assuming...
here is a copy of the print I am talking about
http://i168.photobucket.com/albums/u179/mopar4u/positionaltolerance.jpg
I have issues with the true postion .002 and the paralellism .005 callout.
With the true position are you supposed to assume that the drafter wants you to find the symmetry...