Mid-West Instrument diaphragm type differential pressure gauge. Weather resistant construction standard. Over range protection to full rated working pressure. Shatter resistant acrylic lens. Ideally suited for use on dissimilar fluids and wet gas or fluids with a high concentration of solids. Five year limited warranty. Total separation of high and low pressures by a Convoluted Elastomer Diaphragm. Sensor magnetically coupled to the indicating pointer and optional switches. Common applications: filter/strainer monitoring, compressed air, hydraulic, refrigerant, pump performance testing, heat exchanger pressure drop monitoring, water treatment applications, tank level monitoring horizontal or vertical, flow monitoring and balancing. Two times rated working pressure at ambient temperature. 316 Stainless steel body material. 316 Stainless steel internal metal part. Buna-N seal material. 1/4-inches FNPT back connections, 4-1/2-inches uni-directional round dial, weather resistant engineered plastic case, accuracy +/-2 percent full scale (ascending). Teflon guide bushings.