The Jackson 66800118642 Dishwasher Pressure Gauge is a monitoring component used in compatible commercial dishwashing equipment. It measures water pressure within the dishwasher circuit and displays the pressure reading through its gauge face for reference during machine operation. Connected to the appropriate pressure line, the gauge responds to fluid pressure and moves its internal mechanism to indicate the corresponding reading. It is installed at the designated pressure-monitoring point within the dishwasher plumbing system. This component is used in commercial dishwashers found in restaurants, cafeterias, hotels, and institutional foodservice operations.