A Hypsometer is an instrument for measuring altitude using the boiling point of a liquid.

A radar altimeter measured altitude and velocity, feeding data to the rover's flight computer.

In addition to measuring altitude and temperature and transmit this data in real time.

He was a pioneer in using the anaeroid barometer for measuring altitude.

Braan glided along, measuring altitude by the pressure in his ears.

We were now well within Haelic's atmosphere and measuring altitude in irals rather than c'lenyts.

These instruments are used primarily to measure the elevation or altitude of a celestial object:

A hypsometer is an instrument for measuring height or altitude.

Position error is one of the errors affecting the systems in an aircraft for measuring airspeed and altitude.

It measures airspeed, altitude, vertical speed, and outside air temperature.