quadrantal correctors

quadrantal correctors

[kwä′drant·əl kə′rek·tərz]
(navigation)
Masses of soft iron placed near a magnetic compass to correct for quadrantal deviation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

quadrantal correctors

Masses of soft iron placed near a magnetic compass to correct for quadrantal deviation. These serve the same purpose as compass compensating magnets.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved