Marine archaeologists say the object is an astrolabe, an instrument once used by mariners to measure the altitude of the Sun during their voyages. It is believed to date from between 1495 and 1500.
This early Islamic period is sometimes called the ... Islamic astronomers improved the astrolabe which was a device that allowed travellers to find their way, a bit like a compass.
Aloft, Astrolabe Interactive's survival sandbox where you explore the world, solo or co-op with friends, in your own skyship made from a floating island, has officially entered Early Access.