Methods of machine shop work : for apprentices and students in technical and trade schools (1914)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York : McGraw-Hill · leaf 137
nt of eleven atmospheres—figures which rule outthe common explanation that the adhesion is due to atmos-pheric pressure. The only remaining explanation seems to bethat it is due to molecular attraction which is given an oppor-tunity to act by reason of the superior closeness of contactdue to the… … Fig. io8.—Adhesion of Johansson gages. Both these instruments show the amount of metal remainingto come off an unfinished piece and thus have the property ofgiving warning in common with common calipers, and evenmore effectively, because they show the exact amount remain-ing which calipers do not.…
Machine-shop practice
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