Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 597
Scalk.J— inch=l loot. … ——i 1 —■ 1 \ X \ \ \ t / \ 1 \ Scale.—£ inch=l foot. Fig. 1555 shows a species of piston. The ring is turned the full size, measuring to the point of thetongue-piece, and squares are then cut out to allow the ends to come together, so that the tongue-pieceis in one piece with the ring. The…
Mechanical engineering
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