How does the pressure gauge work?

A pressure gauge measures the pressure of a gas or liquid within a system. It typically consists of a sensing element, such as a diaphragm or a Bourdon tube, which deforms in response to pressure changes. This deformation is translated into a mechanical movement that moves a pointer on a calibrated scale, indicating the pressure level. The gauge can be analog or digital, but the fundamental principle remains the same: converting pressure into a readable measurement.