We are having a little debate here as to the interpretation of a
Geometric statement evolving the tolerance of holes on a PCB.

The geometric statement reads from left to right:
Position (symbol)
Diameter (symbol)
.005 (tolerance)
X (datum)
Y (datum)

Some say that this statement means a positional tolerance zone within a circle.

Others say that this is just another way of stating a bilateral
tolerance zone within a square.

How do you interpret this?

If you have IPC-D-325A you can read about this on page 28 and
appendix B for more information.

Because I don't know how to insert a geometric symbol for POSITION
and DIAMETER you will need to use your imagination here.

  Geometric      Geometric       Tolerance       Datum
  Symbol for     Symbol for                      Reference
  Position       Diameter
        __             __                   .005                 X      Y


Thanks for your time


Donald Kyle C.I.D.+

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