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Scientific American, Vol. 87, No. 20 (November 1902) (1902)

leaf 4

An illustration from Scientific American, Vol. 87, No. 20 (November 1902), 1902, leaf 4
325 Scientific American November 15, 1902. Fia. 14. VARIOUS PROCESSES IN THE MANUFACTURE OF A PHOTOGRAPHIC LENS. ) 1902 SCIENTIFIC AMERICAN, INC.

Lens · Motor · Airship · Apparatus · Carbide · Gas engine · Scientific American · Compressed air · Alternating current · Horse power · Years ago · Constant speed · High potential · Zinc plate · American november

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