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Mathematical Compendium
Signed by Hans Christoph Schissler jr
Late 16th century; German
Gilt brass and silver; 198 x 200 x 90 mm

This is an extremely complex instrument used in a variety of operations. On its upper part are an astrolabe and a geographical mirror, on which the name Hans Christoph Schissler jr, is engraved. This was the son of the more famous instrument maker. On the base of the instrument is a compass which can be oriented horizontally and which bears a calendar on the external surface of its base. The instrument is also equipped with an alidade which has a graduated scale for measuring height and a pendulum which serves as a level.

The whole instrument can be contained within a leather case with golden decorations.

The instrument belonged to the collection brought by Prince Mattias de' Medici from Germany in 1635.

Istituto e Museo di Storia della Scienza, Firenze
Inventory no. 2467

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