Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 488
23-§- Scale.—1± inch=] foot. The parallel motion.—-Figs. 13S1 and 13S2 represent the radius bars, and Figs. 1SS3 and 138-1 theparallel bars. The screws at the end of the parallel bars enter holes in the cross-bar shown in Figs.13S5 and 13S6, and to the exterior bearings of the same cross-bar the… … •-M ENGINES, DETAILS OF.
Mechanical engineering · Mechanics · Engineering
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