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Scientific American, Vol. 41, No. 4 (July 1879) (1879)

leaf 7

An illustration from Scientific American, Vol. 41, No. 4 (July 1879), 1879, leaf 7
mously greater than any fur- nace heat here that they can scarcely be made the subjects index, as shown in our illustration, any deviation or any per- post, that the point of an ordinary turning tool does. The of comparison. Other considerations, on which we can- ceptible change in the position of… … 20, current volume ol APPARATUS FOR GEAR CUTTING. spindle perfectly Scientific American. © 1879 SCIENTIFIC AMERICAN, INC

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