ScientificAmerican1902-03-29.jpg Scientific American 1901-12-07ThumbnailsScientific American 1912-10-19Scientific American 1901-12-07ThumbnailsScientific American 1912-10-19Scientific American 1901-12-07ThumbnailsScientific American 1912-10-19Scientific American 1901-12-07ThumbnailsScientific American 1912-10-19Scientific American 1901-12-07ThumbnailsScientific American 1912-10-19
Shell practice with modern coast-defense guns in a city armory. The twelve-inch mortar. Rear view of eight-inch gun showing compressed-air attachment and dummy shell. Working model of eight-inch gun in 13th Regiment Armory, Brooklyn New York.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner