JonOfScio Posted January 7, 2004 Share Posted January 7, 2004 what 'in Hg' does it open up at? anybody know? 5.5Hg? 6.5Hg? thanks for anybody who knows (doubtfully, not very many) Link to comment Share on other sites More sharing options...
pablovfo Posted February 26, 2004 Share Posted February 26, 2004 This is an old post, but if you have not found the answer yet, it means inches (column) of mercury. It is a pressure measurement, in the same units that a barometer uses. (5 in Hg is approximately 2.5 psi). Link to comment Share on other sites More sharing options...
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