Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)
Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 142
? 2d. Class. w F ▲ … s 106 MECHANICS. intermediate weight, pressure, or tension, is eqnal to the sum of the outsideones, and the comparative size of these last two depends on their positionin reference to the first. Let the intermediate pressure be exerted through the means of a spring balance c. Fig. 192, it will mark…
