Metal-work; a handbook for teachers and students (1914)
Adam, Hugh M. [from old catalog], Evans, James Humphrey, [from old catalog] joint author · New York, Longmans, Green and co.; London, E. Arnold · leaf 95
ingthin work only grip with the top edge, whilst when openedto their maximum they only grip on the bottom edge. Thisfault means that the worker cannot depend upon truth orsquareness of his fixing, which means so much to him in anyfiling operation. 77 78 METAL-WORK Parallel Vices.—To overcome this…
Metal-work
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