For use with air and compatible non-combustible gases, ProSense® DGA differential pressure gauges are used to measure and display difference in air pressure between two reference points in inches of water. Applications include air/gas flow indication, filter monitoring, cabinet purging, room positive or negative pressure status, and more. These high-quality gauges feature an industrial grade black die-cast aluminum case with two high pressure and two low pressure connection ports (1/8-inch female NPT), and a 4-inch white aluminum dial with black pressure markings. For more information, visit