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Wednesday, December 17th, 2025
the Third Week of Advent
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Bible Encyclopedias
Sextant

The Nuttall Encyclopedia

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An instrument used in navigation (sometimes also in land-surveying) for measuring the altitudes of celestial bodies and their angular distances; consists of a graduated brass sector, the sixth part of a circle, and an arrangement of two small mirrors and telescope; invented in 1730 by John Hadley.

Bibliography Information
Wood, James, ed. Entry for 'Sextant'. The Nuttall Encyclopedia. https://www.studylight.org/​encyclopedias/​eng/​nut/​s/sextant.html. Frederick Warne & Co Ltd. London. 1900.
 
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