inch of mercury inHg Inches of mercury English inHg inHg inHg inHg inHg inHg inHg English inHg Hg=Inches of Mercury inHg inHg inHg inHg inHg inHg inHg inHg inHg English inHg inches of mercury (HG) Hg=Inches of Mercury English inHg -15Hg to -20 Hg inHg inches of mercury English English http://en.wikipedia.org/wiki/Inch_of_mercury English inHg English inHg inHg English English inHg