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 874
The plumber-block consists of a sole and cover, which, when practicable, are independently boltedtogether, the heads of the cover-bolts being countersunk in the sole. The cover is made to checkaccurately within the cheeks of the block, the surfaces being planed true to each other, so that thestress…
Mechanical engineering · Mechanics · Engineering
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