Definitions for "Altimeter"
An instrument for taking altitudes, as a quadrant, sextant, etc.
An instrument that tells a plane's altitude.
An instrument that indicates the altitude of an object above a fixed level. Pressure altimeters use an aneroid barometer with a scale graduated in altitude instead of pressure.
Keywords:  pilot, basket, balloon, tell, ground
A device carried in a balloon basket to tell the pilot how high the balloon is off the ground.