How Do You Measure Hg Vacuum?
How Do You Measure Hg Vacuum? In the U.S., the common standard to measure rough vacuum is inches of mercury How do you measure Hg? The first way to measure Hg is known as the Hg gauge (HgV). The scale goes from 0′′ Hg (atmospheric pressure) to 29.92′′ Hg (perfect vacuum). The second way to