18th Oct, 2019 12:00
Fine Photographica & Instruments of Science & Medicine
A Bohemian Equinoctial ring Dial
sundial with one quadrant graduated 0-90, chapter ring I-XII-XII marked for half-hour, engraved to reverse with latitudes for five cities, bridge with sliding pinhole gnomen on calendrical scale, 5.5cm diameter.
sundial with one quadrant graduated 0-90, chapter ring I-XII-XII marked for half-hour, engraved to reverse with latitudes for five cities, bridge with sliding pinhole gnomen on calendrical scale, 5.5cm diameter.
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Auction: Fine Photographica & Instruments of Science & Medicine, 18th Oct, 2019
