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 493
breadth in inches, andextract the square root of thequotient, which is the depth. Itis expedient, however, to makemain beams stronger than is in-dicated by any of these rules, asa higher pressure of steam is now used almost universally than was employed by Mr. Watt. In ourrules for the dimensions… … -6-g-Scale— li inch=l foot.
Mechanical engineering
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