: A semi-silvered mirror (half-clear, half-mirrored) used to view the horizon directly while seeing the reflected image.
: A pivoting arm that moves the index mirror and points to the angle on the graduated arc. sextant
A sextant is a precision instrument used to measure the angle between a celestial body (like the sun, moon, or stars) and the horizon. This measurement is essential for to determine a ship's latitude and longitude when GPS or other electronic systems are unavailable. 🛠️ Anatomy of a Sextant : A semi-silvered mirror (half-clear, half-mirrored) used to