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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. A Comprehensive Guide to Marine Sextant

    Jan 29, 2024 · Sextant is an essential tool for celestial navigation and is also used by mariners to measure the angle between the horizon and a visible object (or two objects at sea).

  4. 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 …

  5. SEXTANT Definition & Meaning - Merriam-Webster

    The meaning of SEXTANT is an instrument for measuring angular distances used especially in navigation to observe altitudes of celestial bodies (as in ascertaining latitude and longitude).

  6. What Does the Sextant Do

    A sextant is a handheld optical tool that helps you find your position at sea by measuring the angle between the horizon and a celestial body, usually the Sun or a bright star.

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

    In marine navigation, when a navigator measures the altitude of a celestial body with a marine sextant he has to measure the altitude as an angle of the body above the visible horizon.

  8. What is a Sextant? - Davis Instruments

    What is a Sextant? Sextants are commonly used in marine navigation and aviation. A sextant is a valuable instrument used to determine the angle between the horizon and a celestial body like the …

  9. 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 …

  10. 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 …