Job Recruitment Website - Property management company - How to distinguish the same batch of water meters, is there a number?

How to distinguish the same batch of water meters, is there a number?

There is a leak in the toilet. It is impossible to reach 80 tons of water if it is not serious.

Generally, red meters are decimal places and black meters are integer places (don't worry about the red wheel, starting from x 1, x 10, X 100 and X 1000, they are one, ten, hundreds and thousands respectively. For example, the file X 1 is 5.