Hooke-Type Microscope by Christopher Cock

A compound microscope with a tooled leather tube, attributed to Christopher Cock, the London instrument maker who supplied Robert Hooke. It follows the design Hooke pictured in Micrographia, his 1665 book of magnified fleas, cork cells and needle points. The National Museum of Health and Medicine in Silver Spring, Maryland, which holds it, links it to Hooke's own observations, but that link is not documented, so it is best seen as a surviving example of his microscope's design rather than certainly the one he used.