Indicated altitude is the altitude read directly from the measuring instruments (altimeter) height reading. This would be accurate only if we adjust or set the air pressure of the meter with air pressure and at the moment.
Indicated altitude is high Read directly from the meter (altimeter) is a highly readable. Will be accurate only if we adjust or set the air pressure gauge is correct. And the pressure at that time.
Indicated high altitude is read directly from the meter (altimeter) height read, can be accurate when us. Adjust or set of correct pressure meter with air pressure at the area and while there.