What do you think of water meters and electric meters?

The water meter looks at the words in the black disc next to it. The meter looks at the first few figures, but the number of words doesn't count. 457 is cubic meters, which means tons. The old water meter only reads the numbers on the black dial, and the red dial is less than tons.

1000 is kWh, indicating degrees. Old-fashioned electric meters only look at the numbers on the black disk, and the red color is below zero.