Brass sextant, 1853 - Museum of History and Industry - University of

National Museum of American History

Navigating the Dead Sea: 1848

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Sextant Royal Museums Greenwich

Find many great new & used options and get the best deals for Vintage Maritime Brass Nautical Sextant Leather Case Kelvin Hughes London 1917 at the

Vintage Maritime Brass Nautical Sextant Leather Case Kelvin Hughes London 1917

Sextant Royal Museums Greenwich

Scientific Instruments

Sextant - Troughton, London, circa 1820

Sextant - Troughton, London, circa 1820

List of Royal Military College of Canada memorials - Wikipedia

Museum

Theodolite - 10-inch, Troughton & Simms, London, England, circa 1850s-1870s

Cary Gould Porter

Historical sunspot records Living Reviews in Solar Physics