Binoculars
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Boulanger succeeded in producing a binocular of an entirely new type in 1859.
Galleries
Telescopes and BinocularsSource
Encyclopaedia Britannica (11th ed., vol. 3) (New York, NY: The Encyclopaedia Britannica Company, 1910)
Downloads
1381×2400, 398.9 KiB
589×1024, 73.9 KiB
368×640, 41.1 KiB
184×320, 16.1 KiB