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 ...

from the contrasting brass and steel parts to the choice of complex Arabic script for the markings. [Uri] has another video that goes over astrolabe basics and his design process that’s well wor ...

But the astrolabe I'm holding is, in fact, a Jewish one. It was made about 750 years ago, in Spain. It's inscribed in Hebrew lettering, but it contains Arabic and Spanish words, and it combines ...