The astrolabe was found on a ship Esmeralda ... that da Gama's crew was using the technology in the late 15th or early 16th Century. Read more at Front Page Detectives. Get FRONT PAGE DETECTIVES ...

The identification of an eleventh-century Islamic astrolabe bearing both Arabic and Hebrew inscriptions makes it one of the oldest examples ever discovered and one of only a handful known in the ...

The astrolabe was a mathematical instrument which ... in London to set up his business in the 1540s. In the seventeenth-century, the instrument was given to the Savilian Professor of Astronomy ...