Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 399
FiG. 877. Fig. 878. 382 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. ter will give the constant pressure per square inch. The moyable weight is the P of a steelyard, and is to be estimated by multiplying fjp by the weight and dividing it by/5 and the area of the valve, to which is to be added the…
Mechanical drawing
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