polariscopes

Iceland-spar is extensively used in the construction of Nicol's prisms for polariscopes, polarizing microscopes and saccharimeters, and of dichroscopes for testing the pleochroism of gem-stones.

Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"

It is of the greatest importance that the polariscopes and all apparatus used in the work shall be carefully and accurately adjusted and graduated, and upon a single and uniform system of standardization.

Scientific American Supplement No. 822, October 3, 1891

The destruction of spectroscopes, polariscopes, and microscopes, brought to a temporary close the pursuit of certain lines of investigation.

History of the University of Virginia, 1819-1919

If you get get caught up with microscopic, magnification, polariscopes, fly to Harry Winstons on 5th avenue in New York City and spend as much as they want.

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