Bedouin astrolabe from the 9th century AD.
https://s3-us-west-1.amazonaws.com/h..._astrolabe.jpg
More:
https://artsandculture.google.com/asset/GwFe19fkMaEraw
Previously:
https://www.homemadetools.net/forum/...225#post153958
https://www.homemadetools.net/forum/...2674#post76760
https://www.homemadetools.net/forum/...730#post163389
https://www.homemadetools.net/forum/...442#post162114