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Scientific American, Vol. 86, No. 14 (April 1902) (1902)

leaf 13

An illustration from Scientific American, Vol. 86, No. 14 (April 1902), 1902, leaf 13
NICKEL AND Electro-Plating Apparatus and Material. THE Hanson & Van WinkleCo., Newark. N. J. 136 Liberty St., N. Y. 30 & 32 S. Cnnal St. Chicapo. The Perfection of Pipe Threading is admitted to be reached when ourNo. 9H PIPE THREADINGMACHINE is used. As a hand machine it is theonly one…

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