Description Dry Pressure Gauge - 0-300 PSI Range - Black drawn steel 2.5" diameter case, clear plastic lens with painted friction ring, 1/4" brass bottom inlet connection. Copper alloy gear movement and Bourdon tube. Large, easy to read numerals. This item is a suitable alternative for the following: 920-SG300, 300G, 5167020, 660124, 2332920-SG300, A300, L18