Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 93
BSS:iJ5iiiiJ^! … portance when pening has to be performed upon finished work, because, if the marks sink deeply,proportionately more grinding or filing is required to efface them; and for this reason the force ofthe blows should be as near equal as possible. Another and a more important reason, however, isthat the…
Mechanical engineering -- Dictionaries
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