Historical scientific instruments from the Museum of History of Science in Florence, Italy. Clockwise from top: armillary sphere made in 1557 by Girolamo della Volpaia; telescope made in the 18th century by Leonardo Semitecolo; a 16th century night clock; lens made in 1663 by Eustachio Divini; and a polyhedral sundial made by Stefano Buonsignori in 1577.