[Uri] has another video that goes over astrolabe basics and his design process that’s well worth watching too. While it’s nowhere near as complicated an instrument, this astrolabe puts us in ...

circular brass instrument that looks a bit like a large brass pocket watch, and it's called an astrolabe. With an astrolabe in my hands, I can tell the time, do a bit of surveying, work out my ...

The astrolabe was a mathematical instrument which was used to carry out astronomical measurements, to calculate the positions of the sun and the stars, and to tell the time. This one was made in ...

The identification of an eleventh-century Islamic astrolabe bearing both Arabic ... The astronomical instrument ... Dr. Federica Gigante, from Cambridge University's History Faculty, made the ...