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Scientific American, Vol. 36, No. 1 (January 1877) (1877)

leaf 13

An illustration from Scientific American, Vol. 36, No. 1 (January 1877), 1877, leaf 13
^tuntxiu %mtxum. 13 January 6, 1877.] Rose:'3 Complete I^racUx^al MacMnist: The most vatuabte … lowance for Shrinkage; Crank Pins; Chucking Brasses; 'rUETTNION IRON MILLS, Pittsburgli, Pa.,Itfanu- SlottingMachine Tools. XI. Twisi- Drills.—Feeding JL faciurers of improved wrought iron Beams and Drills; Drills and Drilling—Flat Drills : Drilling Hard fxirders (patented). Metals; Slotting or…

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