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
Object Name:
parabolic reflector illuminator
Place made:
United Kingdom: England, London
Date made:
1850-1900
Description:
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, <i>Report on Modern Microscopes</i> (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,” <i>Proceedings of the American Association for the Advancement of Science</i> 18 (1869): 303-306, on 306.
Ad for “Henry Crouch’s Universal Parabolic Side Silver Illuminator” in <i>Hardwick’s Science Gossip</i> 9 (1874).
