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  1. Sextant - Wikipedia

    A sextant is a doubly reflecting navigation instrument that measures the angular distance between two visible objects. The primary use of a sextant is to measure the angle between an astronomical object …

  2. Sextant | Navigation, Celestial Measurement & Astronomy | Britannica

    sextant, instrument for determining the angle between the horizon and a celestial body such as the Sun, the Moon, or a star, used in celestial navigation to determine latitude and longitude.

  3. What Is A Sextant? Explained By A Ship’s Officer

    The sextant is a navigational instrument used to measure angles. In celestial navigation, it measures the angle between the horizon and a celestial body (the sun, moon, planets or stars), and in terrestrial …

  4. A Comprehensive Guide to Marine Sextant

    Jan 29, 2024 · A sextant is a marine navigation instrument used to measure the angle between two objects. Learn everything about Sextants in this article.

  5. 3 Ways to Use a Sextant - wikiHow

    Oct 8, 2025 · A sextant is an old navigational tool that measures elevation using angular distances. You can use a sextant to determine the altitude in the sky of the sun, moon, or other celestial bodies …

  6. How to use a Sextant – Celestial Navigation Information Network

    Feb 14, 2020 · A sextant is an instrument generally used to measure the altitude of a celestial object above the horizon. Making this measurement is known as sighting the object, shooting the object, or …

  7. What is a Sextant? - Davis Instruments

    A sextant is a valuable instrument used to determine the angle between the horizon and a celestial body like the Sun, Moon, or Star. It is used in celestial navigation to calculate latitude and longitude.

  8. What is a Sextant and How Does it Work? - Orbitshub

    A sextant is a navigation instrument used to measure the angles between celestial bodies and the horizon. It works by aligning the index mirror with the celestial body and reflecting its image onto the …

  9. What is Sextant, its types, principle and errors - MarineGyaan

    Apr 29, 2025 · Sextant is one of the oldest navigation instruments used by mariners, its called sextant because its arc is 1/6th of a circle i.e. 60° but it can measure angles upto 120° using double …

  10. Sextant Navigation: How Does a Sextant Work? - Bright Hub Engineering

    The marine sextant is a double reflection instrument, used for measuring angles in then same plane. The arc is graduated into degrees from right to left from 0 to 120 (sometimes a little more).