The hands on the dials move in the directions the arrows indicate. Read the number last passed by the hand on each dial, beginning with the one farthest to the left and add two ciphers. x reads 57600; y reads 63800. The difference is the amount of gas used in the month.
If you cannot take the two ciphers on faith, there is another way of reading the metre. Observe the words over each dial. Dial c is in the hundreds moving toward "1 thousand," it therefore reads 600. Dial b is in the thousands moving toward "10 thousand," and therefore reads 7000. Dial a is in the ten thousands moving toward "100 thousand," and therefore reads 50,000. Together they amount to 57,600, the number obtained by the other method.
This is the picture of an electric metre:
To read the metre:
Each hand moves in the direction indicated by the arrows.
Read the figure that the hand has actually passed, beginning with the dial to the left.
755 K. W.'s
Subtract last month's reading from this reading and the difference will be the amount consumed.
| Viz: | 755 | |
| 726 | ||
| 29 | K. W.'s. |