Pressure gauges are devices that measure the internal pressure of media within a system, and are among the most often used instruments in any given industrial facility. Pressure gauges such as differential pressure gauges and digital fuel pressure gauges are used to monitor and control pressure, which is often a necessity in industrial processing. Without pressure gauges, industrial processing systems would be both unpredictable and unreliable. Pressure gauges are used by industry professionals to troubleshoot fluid power machines, which are designed to work within a set pressure range. With properly installed gauges, leaks and unwanted pressure changes can be monitored and addressed immediately.