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Astronomical Compendium
Signed by Christoph Schissler
Dated 1557; Augsburg
Gilt brass; 84 mm in diameter (maximum)

This is an elaborate octagonal compendium with many finely detailed features. The device includes a horizontal string gnomon sundial adjustable for latitude, wind vane, lunar volvelle, orthographic projection of the sphere and nocturnal.

As well as such astronomical and time-telling functions, this instrument also presents cartographic material: it includes a geographical astrolabe and a map of central Europe.

Christoph Schissler was the most prominent Augsburg maker of the later 16th century and similar features appear on other surviving compendia by him (see for example Epact 63321 and Epact 14815)

Museum of the History of Science, Oxford
Inventory number 36175

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