+The **sextant** is a precise instrument primarily used for [celestial navigation](/wiki/celestial_navigation). It measures the angular distance between the horizon and a [celestial body](/wiki/celestial_body), such as the Sun or a star, to determine a vessel's [latitude](/wiki/latitude) at sea.
+## See also
+- [Octant](/wiki/octant)
+- [Astrolabe](/wiki/astrolabe)
+- [Chronometer](/wiki/chronometer)
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