GALILEO GALILEI (attr.), Telescope, Padua or Florence, c. 1610
Glass, wood, paper, copper
Istituto e Museo di Storia della Scienza, inv. 2427

The second of Galileo's telescopes that has come down to us shows what the instruments actually used in observations looked like. The tube, formed of two wooden shells, is covered in paper and held together by copper rings.

GALILEO GALILEI (attr.), Telescope, Padua or Florence, c. 1610