drift indicator

noun
variants: or drift meter or drift sight

Definition of drift indicator

: 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 from the position of the wire the drift angle may then be read directly from a calibration chart

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Cite this Entry

“Drift indicator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/drift%20indicator. Accessed 23 Sep. 2020.

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