Astronomical Ring of an unusual type, signed "Butterfield Paris". Showing the opposite side of the instrument to that on which Butterfield's signature occurs. Undated, circa 1690. This instrument is closer to an
Foldable Astronomical Sphere Ring Astronomy Ring Spinner - Etsy
Astronomical ball gold ring with zodiac symbols on it with writing | Collectors Weekly
Sundial Astronomical Ring Dial - Pendant - Gifts - HEMISFERIUM | MOM
Universal equinoctial ring sundial, astronomical ring dial | Science Museum Group Collection
Astronomical Ring Dial, 10∅x0,4cm - Ancient Instruments
Astronomical Finger Ring, Gemma's Retro Vintage Globe Universe Ball Ring, Armillary Sphere Ring, Unfold to Change into Cosmic Ball, Creative Gift for Couple Lovers for Mom - Walmart.com
astronomical dial; ring-dial; sundial | British Museum