Air Pressure Meters
Air pressure meters are measurement devices used to report absolute and/or differential air pressure. The output of the meters are typically delivered in a number of standard units including psi, mm HG, inches of H2O, millibars, and bars. Air pressure meters almost always include two ports - one to measure the air pressure of interest and one to provide a reference pressure, whether ambient air pressure or otherwise.
Suppliers of Air Pressure Meters