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Scientific American, Vol. 89, No. 13 (September 1903) (1903)

leaf 7

An illustration from Scientific American, Vol. 89, No. 13 (September 1903), 1903, leaf 7
Seated Marksman Entirely Concealed While Firing. The Hyposcope Attached to a Rifle. THE HYPOSCOPE ; BY WHICH A MARKSMAN OAK TAKE ACCURATE AIM WITHOUT EXPOSING HIMSELE. © 1903 SCIENTIFIC AMERICAN, INC September 26, 1903. Scientific American 221 distances. In order to communicate at a distance…

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