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GD&T Datum

  1. Dec 11, 2011 #1
    Do the primary , secondary and tertiary datums need to be perpendicular to each other always ( when specified).
  2. jcsd
  3. Dec 12, 2011 #2

    Ranger Mike

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    Science Advisor

    if the datum is speced with perpendicular tolerance then they gotta be. If its on the print..part must conform to it. The exception being a POINT in space..how do you confirm that it is perpendicular??
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