Earliest known Mariner's Astrolabe research published today to go in Guinness Book of Records

(University of Warwick) Guinness World Records have independently certified an astrolabe excavated from the wreck site of a Portuguese Armada Ship that was part of Vasco da Gama's second voyage to India in 1502-1503 as the oldest in the world, and have separately certified a ship's bell (dated 1498) recovered from the same wreck site also as the oldest in the world.

from EurekAlert! - Social and Behavioral Science https://ift.tt/2O9rsKk