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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