Hi team - yes, Wayne's detail is a key factor on this question. The plating
committees recognized that pad size has an influence on plating deposition
many moons ago so the plating specifications always dictate a pad size so
that everyone is measuring consistently/repeatably. You should be measuring
the pads as specified by the specification. Having the "extra" plating on
the other pads may not be an issue at all.

Dave Hillman
Rockwell Collins
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On Thu, Nov 8, 2018 at 1:34 PM Wayne Showers <[log in to unmask]>
wrote:

> I was one of the main drivers for ensuring that the cautionary note for
> Gold in excess of 5 microinches was flagged.  If you are getting such high
> variability, I suggest doing two things then re-measuring.
> 1) Are the pads being measured at least 60mils x 60 mils (1.5mm x 1.5mm)?
> If not, the values may be off due to additional e saturation coming from
> the wrapped edges.
> 2) is your aperture sized smaller than the pads be measured?  If not,
> select an aperture size smaller than the pad being measured.
>