Sextant

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A quadrant, sextant or octant is used to measure an object's angle above the horizon.

  • Valued image seal.svg Using the sextant to measure the altitude of the sun

  • Diagram of a marine sextant

  • Sextant drawing

  • a man holding a sextant

  • Quadrant (Stark 1815)

  • late 18th century sextant

  • Plath sextant

  • Artificial horizon sextant.jpg

  • Sextant, compass and octant

  • Sextant Navigational aid

  • A midshipman takes a sextant reading aboard the frigate USS Badger (FF 1071).

  • Astronomiska instrument, Sextant, Nordisk familjebok.png
  • Artificial horizon drawing.jpg
  • Octant (Musée des Arts et Métiers).jpg
  • Octant (Musée des Arts et Métiers) 2.jpg
  • Nemo sextant.jpg
  • Sextant 1.JPG
  • Sextant.png
  • Frieberger drum marine sextant.jpg
  • Sextant diagram.svg
  • Octant Arts et Metiers.jpg
  • Tycho instrument sextant mounting 19.jpg
  • Tycho instrument sextant 17.jpg
  • Tycho instrument sextant 16.jpg
  • Sextant et compas.jpg

  • Details showing the scale and vernier on an early 19th c. octant

  • Details showing the reverse side and ivory notepad on an early 19th c. octant‎

  • Details showing the double-holed sighting pinnula on an early 19th c. octant

  • Mid 20th c. sextant

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