Answer:

First, notice what the register increment is. In this case it is in GALLONS. It could be Cubic Feet, or outside the USA it may be Cubic Meters. You will notice on this register that one of the numerical readings of the odometer is not a moving wheel like the others, but is a printed zero. Almost no utility bills water to the actual gallon. If they bill to 10 gallon increments, they would read only the moving white and black wheels for a reading of 53580. Why 80 and not 90 is explained in the next step. On larger meters, there could be two or more printed zeros represented by the sweep hand.

The printed zero is actually replaced by the location of the sweep hand for actual usage, troubleshooting, or testing. If on the 2 circled, it would be replaced by 2. Each full number is one gallon in this case, so if the sweep hand moves from 3 to 4 as shown with the arrow, that is one gallon of usage. The numbers between are 10ths of gallons, so the number circled between 4 and 5 represents 4.7 gallons. In THIS meter, the sweep hand is on 6.5, so the fixed zero is replaced by 6.5 gallons for actual use.

Step-by-step explanation:

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