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Scientific American, Vol. 60, No. 22 (1889) (1889)
leaf 3
screws with annular biting edges at their inner emery and water whenever necessary. In about one rings and to a ends, the jaw having a series of steps or shoulders, and hour I had two of the finest quality of ground glasses, set screws working in threaded openingsin the jaw and frame, so that fully… … ZH. Valenta, in Zeitschrift fur Angewandte Chemie. - of the boring-tool IDE’S LATHE CHUCK, © 1889 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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