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Joost Bürgi [attr.], Compasso topografico militare
Joost Bürgi [attr.], Military and surveying compasses

Germany late 16th cent.
Gilt brass; length 30 cm
Florence, Istituto e Museo di Storia della Scienza, inv. 2530

This instrument was used for measuring angles, heights, and distances and for surveying. It was acquired in Germany by Prince Mattias de’ Medici in the first half of the 17th century.