Scientific American. ANUARY 25, 1890. ] 57 LABORS OF THE ‘NTERNA- (the latter in the proportion … took in this conference, open- Fig. 4—UNIVERSAL COMPARING MACHINE. necessary, from the lessons of ed the first session himself. experience, to modify the We shall say but little of the conference itself, of tools employed for planing metals, Finally, after The selection of the metal was a subject…
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