... : High Quality, Competitive Price, OEM Service; Pressure Gauge:1. Type: Liquid filled pressure gauges2. Case sizes: 1.5'', 2'', 2.5 ... steel bezel4. Tube and socket: Phosphor bronze and brass5. Liquid Filling: With or without liquid, glycerine., silicone oil6. Connection: 1/8, 1/4 ...