Hadley's octant. This artwork is from a 1738 edition of the work 'A description of a new instrument for taking the latitude or other altitude at sea'

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Hadley's octant. This artwork is from a 1738 edition of the work 'A description of a new instrument for taking the latitude or other altitude at sea' (1734) by the English mathematician and inventor John Hadley (1682-1744). Hadley invented the octant in the 1730s, an instrument used in navigation that was a precursor to the sextant.

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Size: 4456px × 3653px
Photo credit: © ROYAL ASTRONOMICAL SOCIETY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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