Epact Scientific Instruments of Medieval and Renaissance Europe

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Polyhedral Dial
Unsigned
Date unknown; origin unknown
Sandstone; 95 mm in height

Polyhedral dials were popular from the 16th century onwards but examples in stone are often difficult to date. It is possible that this weathered and damaged stone dodecahedron could be 16th-century, but it might equally date from 200 years later.

Three of its pentagonal faces have hour lines and slots in which (missing) gnomons would have been inserted.

Museum of the History of Science, Oxford
Inventory number 40431

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