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In order to take an accurate measurement of the atmospheric pressure, a barometer is necessary. This gauge can forecast changes in the weather in short-term increments and its measurements are necessary for finding surface troughs, frontal boundaries and high-pressure systems.

In addition, to some antique barometers making striking decorations and for additional functionality, some barometers also feature a thermometer or a clock. Keep track of the time, the temperature and the pressure in the air with one glance with a barometer.