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jan 1, 1730 - [1730] John Hadley invents the octant.

Description:

The octant is a measuring instrument that would be aligned with the horizon to greatly assist with navigation. It reflects two images together, usually the sun and the horizon to determine the latitude at sea.

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Scientific Revolution / Enlightenment Timeline

ByJustin Roche
26 Oct 2018
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Date:

jan 1, 1730
Now
~ 296 years ago
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