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Scientific American, Vol. 32, No. 10 (1875) (1875)

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An illustration from Scientific American, Vol. 32, No. 10 (1875), 1875, leaf 0
inery manufactured by Inside or female threads, that is to say, threads cut in the at an acute rather than at a right angle to the left hand side each firm could not be sent elsewhere for repairs Among bore of anything, are these private threads, cut by hand with an the ‘‘Maudsley” and inside… … SX Y/ and examine an inside inch, their fit being so thread as soon as it is perfect as to enable them to sustain very struck, for it is an easy matter to cut a double female thread in consequence severe strains. The teeth of such a chaser are So fine that, of the (right hand) chaser, to the end…

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