Robert Hooke's microscope

    Caption: "Microscope manufactured by Christopher Cock (17th century) of London for Robert Hooke (1635--1703). Hooke is believed to have used this microscope for the observations that formed the basis of his book Micrographia (1665)." (Slightly edited.)

    The microscope suffered badly from spherical aberration.

    Credit/Permission: Billings Microscope Collection, National Museum of Health and Medicine, Armed Forces Institute of Pathology, before or circa 2007 (uploaded to Wikimedia Commons by Alan Hawk, 2007) / Public domain.
    Image link: Wikimedia Commons.
    Local file: local link: microscope_robert_hooke.html.
    File: Optics file: microscope_robert_hooke.html.