GENERAL KNOWLEDGE

Detailed explanation-1: -Altimeters measure altitude. An altimeter is a device that measures altitude, the distance of a point above sea level. Altimeters are important navigation instruments for aircraft and spacecraft pilots who monitor their height above Earth’s surface.

Detailed explanation-2: -An altimeter measures the atmospheric pressure at the aircraft’s flight altitude and then compares it to the pressure value set by the pilot. Failing to correct for pressure changes in flight will affect the accuracy of the altimeter reading. True altitude refers to the height of an aircraft above sea level.

Detailed explanation-3: -altimeter, instrument that measures the altitude of the land surface or any object such as an airplane.