- An instrument that looks vertically at the surface to provide an indication of drift angle. It consists essentially of a sight tube with a hairline that is rotated until objects on the ground travel parallel to it. This direction is compared with the course to get the drift angle. Also called a drift meter or drift sight meter.Drift indicator.
Aviation dictionary. 2014.
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drift indicator — noun or drift meter or drift sight : a flight instrument used for measuring the angle of drift of an aircraft and equipped with a hairline or sight wire that may be rotated until objects on the ground appear to travel parallel with it so that… … Useful english dictionary
drift indicator — Aeron. an instrument that indicates the amount of drift of an aircraft. Also called drift meter, drift sight. [1915 20] * * * … Universalium
drift meter — noun see drift indicator * * * drift meter, an instrument for measuring the drift of aircraft; drift indicator … Useful english dictionary
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drift sight — noun see drift indicator … Useful english dictionary
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