1 ene 1730 año - [1730] John Hadley invents the octant.
Descripción:
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.
Añadido al timeline:
fecha:
1 ene 1730 año
Ahora mismo
~ 294 years ago