21st Sep, 2017 12:00
Fine Instruments of Science & Medicine
A 17th Century Ivory Nuremburg Diptych Pocket Sundial
by Melchior Karner, Leaf 1a - With compass viewing aperture and 32 point wind rose around a face of the sun.
Leaf 1b - Vertical dial with with string gnomon and weighted plummet line.
Leaf 2a - With compass bowl suurounded by horzontal dial 4-12-8 divided to quarter hours and pin gnomon dial indicating Italian hours 10 - 23.
Leaf 2b Lunar volvelle with stamped brass rotatable disc, hour scales and lunar age scales, surrounded by Epact scales for both the Julian and Gregorian calendars, stylised 4 maker's mark by the hinge; 51mm x 78mm approx., circa 1675
by Melchior Karner, Leaf 1a - With compass viewing aperture and 32 point wind rose around a face of the sun.
Leaf 1b - Vertical dial with with string gnomon and weighted plummet line.
Leaf 2a - With compass bowl suurounded by horzontal dial 4-12-8 divided to quarter hours and pin gnomon dial indicating Italian hours 10 - 23.
Leaf 2b Lunar volvelle with stamped brass rotatable disc, hour scales and lunar age scales, surrounded by Epact scales for both the Julian and Gregorian calendars, stylised 4 maker's mark by the hinge; 51mm x 78mm approx., circa 1675
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Auction: Fine Instruments of Science & Medicine, 21st Sep, 2017
