Agricultural ammonia gauges measure pressure in systems that circulate or distribute anhydrous ammonia. They are built to withstand harsh environments and the punishment that comes with manufacturing, distributing, and applying ammonia. Gauges have general threaded process connections, a round case, and select models may have “Ammonia” printed on the dial face. They are commonly used to measure pressure in bulk storage tanks, field tanks, processing equipment, metering devices, and applicator equipment.