How to see the old-fashioned water meter?

A. Old-fashioned water meters are generally divided into four black pointers and four red pointers. The red ones are decimal places and the black ones are integer places. The red pointers generally leave it alone, but if you want to record the data of a bath, you still have to be accurate after the decimal point. The black wheel looks at x1, x10, x100, x1000 starting with the single digit, tens, hundreds, and thousands. Such as x1 file is 5, x10 file is 2, x100 file is 3, then the reading is 325.

Second, each file is a small reading, such as x10 file of the needle in the edge of the 3, but not to 3, then read the 2, the other files the same. Clockwise respectively: 1000/100/10/1/0.1/0.01/0.001/0.0001.

Three, the black table that is greater than a ton, the red table that is less than a ton. Let's say the numbers pointed to by the pointers on these eight small meters are: 1, 2, 3, 4, 5, 6, 7, 8, then the reading is 1234.5678.