The Persian Astrolabe is a historical astronomical instrument ... It was the chief navigational instrument until the invention of the compass and sextant. Its many uses included locating and ...

Shah's father had purchased this astrolabe 40 years ago from a utensils ... "It was the chief navigational instrument until the invention of the compass and sextant. In those days, it was used ...

This is an early scientific instrument called an astrolabe. An astrolabe is both an observing tool - it has a moveable rule at the back with sights that you can use to find the height of stars ...

A truth-telling, golden compass. Although the 14th-century astrolabe of Prague, whose image she saw on my phone, is not what she is hoping for. It holds up an enduring truth. It allows many ways ...

the atlas replicated the astrolabe's geographical pinpointing, and the compass was a portable navigator, for example. It's a crying shame that the astrolabe fell so far out of the larger ...