Epact Scientific Instruments of Medieval and Renaissance Europe

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Diptych Dial
Signed by Johann Gebhart
Mid 16th century; Nuremberg
Gilt brass; 77 x 53 x 12 mm

Diptych dials were usually made in ivory but brass examples are not unknown. The Nuremberg maker Johann Gebhart manufactured both varieties (see Epact 46465).

The instrument has a compass, a table of the latitudes of places and two sundials: a universal equinoctial solar and lunar dial and a horizontal pin gnomon dial.



Museum of the History of Science, Oxford
Inventory number 42475

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