Credit: The Museum of Islamic Art, Doha: Marc Pelletreau (SI.5.1999). Arabic manuscript expounding an astrolabe shape of crab or Arabic 'Salta'oon'. Credit: Science and technology in Islam ...

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 stands out because, having been built by Muslim craftsmen, it subsequently passed through the hands of Jewish and Christian users, who translated and modified the hand-held device ...