Sextants use a similar premise to astrolabes ... Initially, this was done with a quadrant, which was based on an astrolabe ...

An astrolabe is an ancient scientific instrument ... One form of navigation that Ernest Shackleton's crew used was a sextant. To help students better understand how a sextant works, have them ...

Legacy: The astrolabe influenced the development of other scientific instruments, such as the sextant and modern analog computers. Today, they are admired for their intricate design and ...

Eventually, the astrolabe, this one intricate object which could do so many things, would be displaced by a whole range of separate instruments - the globe, the printed map, the sextant ...