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What does this true position mean?

I don't know what this true position on the hole is constraining. Bolt circle diameter or orientation of the hole maybe? Trying to determine if I need to measure the hole as a cylinder. Appreciate the help.

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  • It's essentially the hole pattern to itself.
    Probably will have to a manual alignment using two of the bolt holes to offset before going to DCC.
    Create a cylinder on Datum A, then level and set the origin on it.
    Measure the bolt hole circles and do a 2D best fit rotary alignment. (Terminology may not be correct.)
    Then report the position of the bolt hole circles.
  • GD&T is a design standard, not a manufacturing or inspection standard. I do agree that often inspection and manufacturing often have a better understanding of the subject. However, doing an end run around design is often the cause of the bickering. Manufacturing, quality and design have to have a common understanding of the requirements and how they are communicated. It will take a lot of hard work on all parties part to get there.
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  • GD&T is a design standard, not a manufacturing or inspection standard. I do agree that often inspection and manufacturing often have a better understanding of the subject. However, doing an end run around design is often the cause of the bickering. Manufacturing, quality and design have to have a common understanding of the requirements and how they are communicated. It will take a lot of hard work on all parties part to get there.
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