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Scientific American, Vol. 66, No. 6 (February 1892) (1892)

leaf 7

An illustration from Scientific American, Vol. 66, No. 6 (February 1892), 1892, leaf 7
should world for the production of armor and high-powered different times, upon comparison, a planetary body be in the form of plates or wires, the surfaces of which gun forgings. must be as clean as possible. The nickel should, more- will betray itself by its movement with regard to the The… … BORING, TURNING, AND CHAMBERING HEAVY GUNS AT THE WASHINGTON GUN FACTORY. ber of six inch rifled guns, with a smaller number of hammering or rolling which completes the welding posed long enough, the planet will, by its movement, eight and ten inches caliber, and the work for nearly a trace a "…

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