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Subject:Re: 2.1l vacuum readings?
From:Bob Stevens
Date:Thu, 21 May 2009 22:15:02 -0600
"normal" is 15-20 vacuum inches of mercury ....

On Thu, May 21, 2009 at 9:51 PM, Larry Alofs <lalofs@gmail.com> wrote:

> 17-21 sounds like a lot.  I thought that a perfect vacuum was about
> 14.7 psi.   :-)
>  Maybe you're thinking inches of mercury?
>
> Larry A.
>
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