Barometer, an instrument that measures air pressure and is used to forecast changes in the weather., Thermometer, is the instrument used to tell the air temperature, Weather Vane, a movable device usually attached to a roof to show which way the wind is blowing, Anemometer, an instrument for measuring the speed of the wind, Rain Gauge, is an instrument used to measure precipitation, weather balloon, is a balloon that sends information about the atmospheric temperature, atmospheric pressure and humidity by means of a small, expendable radio transmitter

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