A rare Ottoman brass equinoctial ring dial, signed by Mahmud Bey al-Falaki, Egypt, dated 1291 AH/1874 AD | Arts of the Islamic World & India including Fine Rugs and Carpets | 2021 | Sotheby's
Epact: Astronomical Ring Dial signed by Johannes Motter, mid 16th century
Celestial Desktop Timekeepers - Astronomical Ring Dial | Shopping from Microsoft Start
Miniature Astronomic Ring Dial and stand – Zaytoun AlJundi