XZT Analog Hydraulic Pressure Gauge From -15PSI to +15000 PSI Pressure Gauge, you can choice you need pressure range 2 1/2" Dial, 1/4" Male NPT Connection, Rear Mount, Dual Scale PSI & Bar, Glycerin Filled, Stainless Steel Case/Bezel, Brass Internals & Plastic Lens. Professional Grade Pressure Gauge. One piece design for toughness during installation. Measures air pressure, water pressure, fuel pressure, gas pressure, oil pressure, anything not corrosive to brass. Liquid filled for added durability in applications where vibration is present. Stainless steel case and bezel, copper alloy internals. ¼” Male NPT Rear Connection. Our XZT brand offers the best selection of pressure.