upr000041 10

^WYO^ m 1 | Instructions for Reading Water Meters t f I 'HIS illustration shows the dial on the regular [_ register of a %-inch Trident meter. This is known as a “one cubic foot dial.” It is read in the same way as the register of a gas or electric meter. When a hand or pointer is between j two figures die lesser of the two must always be taken. If there is any doubt as to the correct reading of any indice, refer back to the one next lower. For example: In the illustration the hand in the 100,000 indice points between the 9 and 'the 0, hence the 100,000 indice must be read as indicating 9. In die 10,000 indice the hand seems to indicate 7 ex­actly, while by referring back to the 1,000 indice next lower we find its hand has not reached die 0; therefore the 10,000 indice must be read as indi­cating 6 instead of 7, and the entire reading of the register as shown would be 96,872 cubic feet. The indice without figures on die %*» aud 1 - inch meters, which is marked “one foot,** is known as a test dial and indicates one cubic foot gradu- ! ated into tenths. It is used for close testing, and 1 is also used by inspectors to quickly ascertain if | the meter is working; but in all service readings it should be entirely disregarded. The capacity of an indice is always indicated by figures either above or below it; and it may be well to call attention to the fact that while die units indice has a capacity of 10 the highest pos­sible reading is 9. In like manner, the highest possible reading of the units and next higher in- | dices would be 99; the highest possible reading of | the units and next two higher indices would be i 999, and so on. The units indice, which is the indice of the smallest quantity that should be taken into consideration in service readings, is indicated | on the “one cubic foot dial** by the number 10 underneath it. In meters of large size the units indice is sometimes made to indicate 100 or 1,000 [ units instead of ten, depending upon the size of die meter. This would of course increase the > reading tenfold or one hundredfold. A very simple and accurate rule for reading any meter is this: Read the meter, regardless of | its size, exactly as you would the ^8-inch size. If the units indice has an indicated capacity of 100, add one cipher to the result so obtained. If the i units indice has an indicated capacity of 1,000, I add two ciphers to the result of your first reading, ' and so on. In commercial practice 1 cubic foot of water is assumed to be equal to 7.5 U. S. gallons. Hence, to transpose cubic feet into gallons, multiply the reading by 7.5. One cubic foot of water is also | assumed to weigh 62.5 pounds avoirdupois.