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Re: True position tolerance zone


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Posted by John-Paul Belanger (152.163.188.165) on November 22, 2002 at 22:57:05:

In Reply to: True position tolerance zone posted by Andy on November 13, 2002 at 04:52:50:

I suspect it is an error, and should have included the diameter symbol. Here's how to tell: If it is to be two parallel planes, then the direction of those planes should be clear by the way the dimension lines are attached to the hole. If a leader line is being used, then we don't know which direction the planes are in (up/down or left/right?). If they had wanted two planes along each axis, then two feature control frames should be used.


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