Pressure gauge

The utility model relates to the technical field of a pressure device and discloses a pressure gauge which comprises a gauge cover (1), a gauge shell (2), a pointer (3), a dial (4) and a support (5). The gauge shell (2) is provided with a screw hole. The pressure gauge also comprises a clamp (7). The gauge cover (1) is sleeved in the clamp (7) which is cooperated with the screw hole through a screw and is fixed on the gauge shell (2). The dial (4) is provided with a beryllium copper spiral tube (9). According to the pressure gauge, a spring is substituted by the beryllium copper spiral tube, compared with the spring, the service life of the beryllium copper spiral tube is longer, and the counting of the beryllium copper spiral tube is more accurate; a joint of an outlet tube and an inlet tube is provided with a sealing pad, the air tightness of pressure gauge can be ensured, and the accuracy of measurement is raised; the gauge cover is fixed by using the clamp, the mode of the clamp is simple and convenient,