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
Ring dial | Royal Museums Greenwich
Astronomical ball gold ring with zodiac symbols on it with writing | Collectors Weekly
astronomical dial; ring-dial; sundial | British Museum
Astronomical Ring of an unusual type, showing the side of the instrument "Butterfield Paris". Undated, circa 1690. This instrument is closer to an equinoctial ring dial than most astronomical rings. | Wellcome Collection
The place of the UERD in the armillary section of the classification... | Download Scientific Diagram
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AN ASTRONOMICAL RING DIAL
Astronomical rings - Wikipedia
Mid 18th Century Brass Astronomical ring dial. - Gilai Collectibles
Museo Galileo - Astronomical ring
Epact: Astronomical Ring Dial signed by Gualterus Arsenius, dated 1572
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A c. 1720 Universal Ring Dial - Antique Scientific Instruments, Globes and Cameras 2018/04/04 - Realized price: EUR 7,500 - Dorotheum
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AN ASTRONOMICAL RING DIAL
16th Century German Astronomical Ring | A Token of Love – Gifts for Designers
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astronomical dial; ring-dial; sundial | British Museum
Epact: Astronomical Ring Dial unsigned, late 16th century
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