Answer:
True altitude at field elevation
Explanation:
Altimeter is a device which is used to measure altitude of an object above a fixed level.
Barometer is a device used to measure atmospheric pressure .Atmospheric pressure changes from place to place it depend upon the mean sea level.
When Altimeter setting is done to the value at which the barometric pressure scale the altimeter is set so that it will indicate the True altitude at the field location.
