A radiosonde (RAY dee oh sawned) is a device that is sent up on a weather balloon to study weather conditions aloft.
weather balloon
A device used to measure wind speed. It is mostly used by meterologists and weather forecasters.
A barometer is a device used to measure atmospheric pressure. If pressure is high (good weather), then pressure on the barometer will exceed 1000 millibars. If the pressure is low (bad weather), then the pressure reading on the barometer will be below 1000 millibars.
"barometer"
Weather balloons typically carry a thermometer (to measure air temperature), a psychrometer (to measure humidity), a barometer (to measure air pressure) and a transmitter (to send the information through radio waves to equipment at the ground so we will know what the instruments are measuring up in the air)
"barometer"
A barograph measure the amount of weight in the air.
The barometer is the instrument that is used to measure the air pressure.
"barometer"
Barometer
barometer
spirometer