Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 459
. 12 7,000 to 9,000 12 to 9 9,000 to 12,000 9 to ^ 12,000 to 14,000 £ to f. 17,000 to 18,000 The head of the water in pounds avoirdupois, multiplied by the diameter of the pipe in inches anddivided by the above coefficients, gives twice the thickness of the iron to be used. Allowance mustbe made…
Mechanical engineering -- Dictionaries
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