Disc of Sabu
Links:
https://de.wikipedia.org/wiki/Sabu-Scheibe
https://archivapp.sagenhaftezeiten.com/de/profiles/ae8c0f8191ae/editions/ee2c9cd369a3d2c683d9/pages/page/5
https://www.ancient-origins.net/artifacts-ancient-technology/disc-sabu-0015642
https://www.milleetunetasses.com/blog/chemistry-in-ancient-egypt/disc-of-sabu-by-ancient-egyptian-technology.html