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  2. Altimeter - Wikipedia

    en.wikipedia.org/wiki/Altimeter

    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. A pressure altimeter is the altimeter found in most aircraft, and skydivers use wrist-mounted versions for similar ...

  3. Pressure altimeter - Wikipedia

    en.wikipedia.org/wiki/Pressure_altimeter

    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. A pressure altimeter is the altimeter found in most aircraft, and skydivers use wrist-mounted versions for similar ...

  4. Odometer - Wikipedia

    en.wikipedia.org/wiki/Odometer

    An electronic odometer (below speedometer) with digital display showing 91,308 miles (146,946 km) from a Jeep Grand Cherokee (WJ). An odometer or odograph is an instrument used for measuring the distance traveled by a vehicle, such as a bicycle or car.

  5. Inertial navigation system - Wikipedia

    en.wikipedia.org/wiki/Inertial_navigation_system

    Inertial navigation is a self-contained navigation technique in which measurements provided by accelerometers and gyroscopes are used to track the position and orientation of an object relative to a known starting point, orientation and velocity.

  6. Timex Expedition WS4 - Wikipedia

    en.wikipedia.org/wiki/Timex_Expedition_WS4

    The Timex Expedition WS4 is a multifunction digital watch produced by Timex. In addition to regular timekeeping, it features barometer, altimeter, thermometer, compass, and weather forecast functions. "WS4" stands for "Wide Screen 4 Functions". [1] [2] It was introduced in May 2009. [3]

  7. Pitot–static system - Wikipedia

    en.wikipedia.org/wiki/Pitot–static_system

    Pressure altimeters must be calibrated prior to flight to register the pressure as an altitude above sea level. The instrument case of the altimeter is airtight and has a vent to the static port. Inside the instrument, there is a sealed aneroid barometer. As pressure in the case decreases, the internal barometer expands, which is mechanically ...