Mariner's astrolabe (jan 1, 1295 – jan 1, 1750)
Description:
The mariner's astrolabe was an inclinometer used to determine the latitude of a ship at sea by measuring the sun's noon altitude (declination) or the meridian altitude of a star of known declination, can be found to the earliest date of 1295.Added to timeline:
Date:
jan 1, 1295
jan 1, 1750
~ 455 years