Question

what is the difference between meno meter and mechanical gauge?

Answer 1

A manometer is a negative pressure (vacuum) reading instrument for reading levels of vacuum. The more common manometers are mechanical gauges configured as fluid filled tubes affixed to a scale to read in either inches of water (in/H2O) or inches of mercury (in/Hg) depending on the level of vacuum being monitored. Other scales can be used if required again to suit the particular monitored vacuum levels. A monometer is a pressure gauge but only for negative pressure. There are many other types of both positive and negative pressure gauges that work off of other principles