LAPPING is one of the oldest arts connected with the working of metal parts; yet, until recently, it was confined to the laboratory, the manufacture of scientific instruments and, only where avoidance was impossible, to the finishing of parts where excellence had to be attained regardless of the cost.
(1937), "Lapping and Honing Machines: Machine Tools for Obtaining a High Standard of Finish at Reasonable Cost", Aircraft Engineering and Aerospace Technology, Vol. 9 No. 5, pp. 137-138. https://doi.org/10.1108/eb030181Download as .RIS
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