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 590
^ … In general the angles of the points of the saw teeth are more acute, the softer the material to be sawn, agreeably to common usage in cutting tools; and the angles of the points, and those at 7t. \^ which the files are applied, are necessarily the same. Thus in sharpening saws for metal, the file…
Mechanical engineering · Mechanics · Engineering
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