navigating sextant
navigating sextant
[′nav·ə‚gād·iŋ ‚sek·stənt] (navigation)
A sextant designed and used for observing the altitudes of celestial bodies, as contrasted with a hydrographic sextant.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.