This 1/2 inch lead free combination pressure and temperature gauge is used in commercial, residential, and institutional HVAC applications. It features a center, back-entry, black enamel steel case, Kostil Polymer window, 1/2 inch NPT connection, copper alloy Bourdon tube pressure element, and bimetal spiral spring. Accuracy is ASME, Type B. This gauge features a 3 inch dial with pressure rating scale from 0 to 200 psi and temperature range 60 to 320 degrees F.