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Richard Halsted Ward showed an example of Crouch’s Universal Parabolic Illuminator (along with a first class binocular microscope made by Henry Crouch of London) at an American microscope meeting in 1869. This is that example. It is a small curved mirror that attaches to the objective of a microscope and throws light onto the object under examination. The inscription reads “H. Crouch London England (51 London Wall).”
Ref: Michael Foster, Report on Modern Microscopes (London, 1867), pp. 36-37.
“Report on the Microscopes and Microscopical Apparatus, Exhibited at the Meeting of the American Association for the Advancement of Science, At Salem, Mass., August, 1869,” Proceedings of the American Association for the Advancement of Science 18 (1869): 303-306, on 306.
Ad for “Henry Crouch’s Universal Parabolic Side Silver Illuminator” in Hardwick’s Science Gossip 9 (1874).
Currently not on view
Object Name
parabolic reflector illuminator
date made
Crouch, Henry
place made
United Kingdom: England, London
overall: 1 1/2 in x 2 1/2 in x 3 1/2 in; 3.81 cm x 6.35 cm x 8.89 cm
ID Number
accession number
catalog number
Credit Line
Miss Charlotte B. Ward
Science & Scientific Instruments
See more items in
Medicine and Science: Medicine
Science & Mathematics
Data Source
National Museum of American History
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