In summary, aircraft use an instrument called an altimeter to measure their altitude. This instrument uses air pressure and a calibrated scale to determine the height of the aircraft above sea level. It is an essential tool for pilots to maintain proper altitude and avoid collisions with other aircraft. The altimeter is also used to determine the aircraft's rate of climb or descent. While modern aircraft have advanced digital altimeters, the basic principle remains the same - measuring air pressure to determine altitude.
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sunnyy
Which instrument is used to measure altitudes in aircraft's