Pressure Gauge: High Quality, Competitive Price, OEM Service; Pressure Gauge:1. Type: Liquid filled pressure gauges2. Case sizes: 1.5'', 2'', 2.5'', 3'', 4'' and 6 inches;3. Case Material: 304 stainless steel case, it can take with back flange; Bezel material: Stainless steel bezel4. Tube and socket: Phosphor bronze and brass5. Liquid Filling: With or without liquid, glycerine., silicone oil6. ...