Mariner's astrolabe (1 janv. 1295 – 1 janv. 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.Ajouté au bande de temps:
Date:
1 janv. 1295
1 janv. 1750
~ 455 years