AHA!!!
I can dig it,man.
Thanks!
Steve P.
--- Eric Hufstedler <huffy340@gmail.com> wrote:
>
> > The scanner said 10 in HG,and my gauge said about
> 19.
>
> If the two reading were taken at the same time, then
> one is
> pressure, the other is vacuum. Pressure + vacuum =
> ~29".
>
> The vacuum gauge really just reports atmospheric
> pressure minus
> measure pressure, which is why vac gauges usually
> only go up to
> about 30".
>
>
____________________________________________________________________________________
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