Dial Face

The dial face is a precision-engineered circular display component in pressure gauge assemblies, featuring calibrated markings (typically in psi, bar, or kPa) that allow operators to read pressure values via a mechanical pointer. It serves as the primary visual interface between the instrument and user, requiring high accuracy in scale division, clear legibility, and durability under industrial conditions.

The dial face works in conjunction with a Bourdon tube or diaphragm mechanism; as pressure changes cause mechanical movement in the gauge's internal mechanism, a pointer rotates over the calibrated dial to indicate the corresponding pressure value. The dial's scale is mathematically calibrated to ensure linear correspondence between pointer position and actual pressure.