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 882
l form, and with two snugs at the middle of theirlength, which, entering corresponding recesses in the plumber-block, retain them securely in their placeswhen the cover is fixed. By this arrangement they are more easily fitted, contain less useless metal,and have a lighter appearance. The…
Mechanical engineering
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