Pressure Gauge, 1.5 in. ABS Case, Copper Alloy Internals, 3000 psi/kPa, 1/8 NPT Male Back Conn, Glycerin Filled, 0.3mm Brass Press Fit Orifice. High quality liquid filled gauge. Vacuum and compound ranges through 0 psi to 15,000 psi. Impact resistant ABS and Stainless Steel case. Copper alloy and Brass wetted parts. Cleaning for Oxygen Service O2 is available only for dry or HL Halocarbon filled gauges. For gauges with MIP, GY40 fill is standard for liquid filled gauges.