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Does anyone know what the 20 ring is for?
Also, the center wheel, the wheel on the Y shaped bridge, the one that should connect when I activate the stopwatch function I think it's supposed to connect with the wheel next to it that is continually running, but not only does it not connect with that wheel, leading the chrono function not to work, but it is very loose.
Also, the upper pusher just starts the chrono. To stop it, you press the lower pusher.