Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 647
d 1624. The first is a chisel for large rough files; the length is about 3 inches,the width 21, inches, and the angle of the edge about 50 degrees; the edge is perfectly straight, butthe oue bevel is a little more inclined than the other, and the keenness of the edge is rounded off, theobject being… … 1624.
Mechanical engineering
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