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Diptych Dial
circa 1600; Nuremberg
Ivory; 58 x 76 x 3 mm

Only the lower leaf remains of this diptych dial. The outer part has a silver (or copper) lunar volvelle with geometrical decoration around it and two bun feet.

The inner part has a string gnomon dial with a sun effigy in the centre and scroll decoration, with common hours numbered from 6 to 12 to 6 and VI to XII to VI and divided to the quarter hour. The hour lines are coloured in red and green. Below, there is a pin gnomon dial (pin missing), with the declination of the sun indicated in red lines by means of the symbols of the zodiacal signs.

See P. Gouk, The Ivory Sundials of Nuremberg 1500-1700 (Cambridge, 1988).

Ilaria Meliconi

Museum of the History of Science, Oxford
Inventory number 55134

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