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Galileo Galilei, Telescopio
Galileo Galilei, Telescope

c. 1610
Glass, wood, leather; length 92 cm, diameter 6 cm
Florence, Istituto e Museo di Storia della Scienza, inv. 2428

It is one of the only two existing telescopes certainly belonged to Galileo. Covered with leather with gold tooling, this instrument was donated to Cosimo II immediately after the publication of the Sidereus Nuncius (19 March 1610).