SEXTANTS
Noun
sextants
plural of sextant
Source: Wiktionary
SEXTANT
Sex"tant, n. Etym: [L. sextans, -antis, the sixth part of an as, fr.
sextus sixth, sex six. See Six.]
1. (Math.)
Definition: The sixth part of a circle.
2. An instrument for measuring angular distances between objects, --
used esp. at sea, for ascertaining the latitude and longitude. It is
constructed on the same optical principle as Hadley's quadrant, but
usually of metal, with a nicer graduation, telescopic sight, and its
arc the sixth, and sometimes the third, part of a circle. See
Quadrant.
3. (Astron.)
Definition: The constellation Sextans. Box sextant, a small sextant
inclosed in a cylindrical case to make it more portable.
Source: Webster’s Unabridged Dictionary 1913 Edition