An analog pressure gauge is a device used to measure the pressure of gases or liquids. It typically features a dial with a needle that indicates the pressure level on a marked scale. These gauges operate using a mechanical system, where changes in pressure cause a diaphragm or Bourdon tube to move, translating pressure into a readable value. Analog pressure gauges are commonly used in various applications, including industrial machinery, HVAC systems, and automotive engines. They provide a simple and reliable way to monitor pressure, helping to ensure safe and efficient operation of equipment and systems.