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 363
ning of a period and again at the endof that period. By subtracting the first reading from the second,the number of watt-hours or kilowatt-hours used during theperiod is obtained. The meter man, having in his possession a record of thereadings of each customers meter for the preceding months,… … Fig. 2536.—This dial reads 997kilowatt hours. 10.000 1.000 100 10 /l [213\4 ® 7JL7 ^ 313^= 7J5 6/\654/\456/ ^ KILOWATT HOURS ^-^ Fig. 253c.—This dial reads 9121kilowatt hours. noted that the last figure passed over by the pointer is 1.The next circle to the left shows the figure last passed to be2,…
Heating · Lighting · Plumbing
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