This vintage NCG National Cylinder Gas Gauge is a true antique, perfect for collectors and enthusiasts of hydraulics, pneumatics, and pumps. With a face diameter of 2.5 inches and a connection diameter of 1/2 inch, it is designed for side/bottom mounting and displays the maximum pressure of 4000 psi (275.8 bar). Made in the United States, this unit comes with a white face and is a single unit quantity. It is suitable for use in air pressure gauges and is a must-have for those interested in the history of industrial equipment. Add this unique piece to your collection today!