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Navigational instrument
Answer for the clue "Navigational instrument ", 6 letters:
octant
Alternative clues for the word octant
Word definitions for octant in dictionaries
WordNet
Word definitions in WordNet
n. a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Octant \Oc"tant\, n. [L. octans, -antis. fr. octo eight. See Octave .] (Geom.) The eighth part of a circle; an arc of 45 degrees. (Astron. & Astrol.) The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, ...
Wikipedia
Word definitions in Wikipedia
Octant may refer to: Octant (plane geometry) , 1/8th of the full circle Octant (solid geometry) , one of the 8 divisions of the 3-D space by coordinate planes Octant (circle) , a circular segment Octant (instrument) for celestial navigation The Octant, ...
Usage examples of octant.
Torve the Trog was eating from a heaping plate of kumquats, Morovian sugar-grass, and ruvelo, a red root-paste common in this octant as a staple starch.
Sailors could tell their latitude by the angle of the sun off the horizon, had been doing it for a thousand years with cross-staffs, astrolabes, octants and sextants.
There were no instruments in the taxi, no built-in octants, no patent logs, no computers.