SERIES 100 General Equipment Gauge SERIES 200 Compressed Gas/ Welding Gauge SERIES 300 Refrigeration Gauge Ammonia Gauge SERIES 400 2.5" Diaphragm Gauge SERIES 500 Stainless Process Gauge SERIES 600 General Equipment Receiver Gauge SERIES 1000 4" All S.S. Process Gauge SERIES 1500 4.5" Process Gauge Configuration A 4.5" Process Gauge Configuration B SERIES 1600 Test Gauge SERIES 1700 Pressure Receiver Gauge SERIES 1800 4.5" Process Bellows Gauge SERIES 2000 Economy Process Gauge PRESSURE Gauge OPTIONS GENERAL INFO C SERIES S SERIES T SERIES E SERIES MINI SEALS   The 500 Series stainless steel case gauges are designed to withstand the rigors of severe duty because of their corrosion resistance and strength. They can be liquid-filled to further enhance their ability to withstand corrosion, shock, and severe vibration. Dial Size: 1.5", 2.5", and 4" Case: 304 stainless steel with blowout grommet. Ring: 304 stainless steel attached bayonet style Dial: Aluminum, white finished with black markings. Window: Glass standard; acrylic or shatter proof glass available. Ranges: See Table VII of Model Selection Chart - Gauges; Not all ranges available Pointer: Aluminum, black finish. Movement: Brass or 300 series stainless steel. Bourdon tube: Phosphor Bronze Accuracy: 1% FS dry; 2% FS liquid filled. Connections: 1/4" or 1/2" NPT, LM or CBM Options: Liquid fillable