Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 247
use the next smallest. Repeat this operation untila balance is obtained, that is, until the pointer will swingthe same distance on one side ason the other. The balance is a lever of the firstclass. Other examples are shown inFigures 250, 251, 252. Figures 253, 254, 255 show applica-tions of the… … Figure 250. —The CanOpener Used as a First(Class Lever. APPLICATIONS OF THE LEVER 237
Physics
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