Aeroid barometer

The utility model provides an aneroid barometer, which comprises a meter shell, meter hands, a dial plate and a metal film box with one end fixed in the meter shell, and the meter hands are fixedly arranged on a meter hand shaft vertically penetrating through the dial plate; the watch hand shaft is pivotally installed in the watchcase and is driven to rotate by the transmission of the metal film box. A rotating shaft and a transmission arm pivotally mounted on the rotating shaft are fixedly mounted in the watchcase, the end part of a short arm section of the transmission arm is connected withthe free end of the metal film box through a linkage rod, and the end part of a long arm section of the transmission arm forms a driving end; and a pull wire is tied at the driving end, the pull wireis tightly wound on the watch hand shaft, and the winding section of the pull wire is arranged in an anti-sliding manner relative to the surface of the watch hand shaft, so that the pull wire is pulled in response to the defor