filament gauge

This is a filament gauge which can record how many circles the spool has turned.
The counter is designed as intermittent gear assemble. For each stage, the input gear only have one tooth, and the output gear have ten teeth and ten circle teeth (the circle teeth are used to stop the output gear rotation).
Each stage has the ratio,10:1, so the first dial plate stand for units' place(“个”), and the second dial plate stand for ten place("十"), the third dial plate stand for hundred plac