What is the size and width of a general gas meter? How long has it been?

There are many kinds of gas meters, but they are generally similar in length and width, ranging from 2 10-220mm in width to 220-230mm in length. When gas is used, you can see that the lowest digital wheel rotates slowly. When the lowest digit turns from 0 to 9, the digit wheel in front of it rotates once, and the reading increases by one digit, which is carry. Obviously, this is also a decimal counting device called "roller counter".

Extended data:

There are G 1.6, G2.5, G4 household meters and G6, G 10, G 16, G25, G40, G65, G 100 industrial meters, as well as smart IC card gas meters, code prepaid gas meters and direct reading smart meters.

Comparison of advantages and disadvantages

Roller counter has many advantages, but it has a big disadvantage, that is, it has to overcome the great friction resistance when driving the high-position wheel during handling. The gas meter can overcome this shortcoming because its driving force is relatively large.