abstract:A drift meter, also drift indicator and drift sight, is an optical device used to improve dead reckoning for aircraft navigation. It consists of a small telescope extended vertically through the bottom of the aircraft with the eyepiece inside the fuselage at the navigator's station.
Peach blossom brookdrift: peach blossom mountain stream which flows off from the elevation 1100 meterpeach blossom point mountain peak canyon, isone ofdrift good regions.