Altimeter - Wikipedia Altitude can be determined by the measurement of atmospheric pressure The greater the altitude, the lower the pressure When a barometer is supplied with a nonlinear calibration so as to indicate altitude, the instrument is a type of altimeter called a pressure altimeter or barometric altimeter
Altimeters - Aircraft Spruce Aircraft Spruce is the trusted source for aircraft parts, pilot supplies, and aviation equipment Serving certified, experimental, and homebuilt aircraft worldwide
Altimeters - United Inst The Altimeter is designed for use in aircraft to help the pilot determine altitude, the height above a reference point (generally mean sea level) The Altimeter measures existing atmospheric pressure, which varies with altitude