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Scientific American, Vol. 51, No. 24 (1884) (1884)
leaf 7
prisms, which offer no more which is afforded between the two ends of the cylinder at obstruction to the view tban a thick piece of plate glass. the various angles. The rate of fire can be reduced in prac- The position of the image does not shift when the eye lice to one shot in every twenty-five… … to lift the sear, and ing is required, © 1884 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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