Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances (1918)
Keene, E. S. (Edward Spencer), b. 1864 · New York, McGraw-Hill book company, inc.; · leaf 267
7^.—Gas-meter dial. It reads 38600 cubic feet. Take the figure 3 on the 100 thousand circle, the figure 8 onthe 10 thousand, and the figure 6 on the 1 thousand, and you have 256 MECHANICS OF THE HOUSEHOLD 30,000, 8000, and 600, or 38,600 feet. To ascertain the quantityof gas used in the time… … Fig. \77B.—Gas-meter dial. It reads 40100 cubic feet. You have 40,100 Subtract your last reading 38,600 and you find that your bill should be for 1,500 feet When 100,000 feet have been passed, the index is at zero; thatis, all the pointers stand at 0, and the registration begins all overagain.…
Heating · Lighting · Plumbing
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