Epact Scientific Instruments of Medieval and Renaissance Europe

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Astrolabe
Signed by Georg Hartmann
Dated 1527; Nuremberg
Brass; 162 mm in diameter

This astrolabe by Georg Hartmann of Nuremberg was in England by the 17th century when it came into the possession of Archbishop Laud, whose coat-of-arms now appears on the back. The rete, pin and wedge are missing.

The instrument is completely black on the outside, due probably to atmospheric conditions, such as a gas-lit room in the nineteenth century; the inner part of the plates has, in fact, not been affected.

See also Epact 46692.

Museum of the History of Science, Oxford
Inventory number 38642

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