I'm busy making a mechanical ball counter GBC and designed the below cipher wheel. There will be 5 of them so counting to 99.999 because per event day about 26.000 balls can run through a GBC. Each cipher wheel can be taken out to set to zero because I don't want to turn the wheels back 26.000 times and the end of the day. The mechanism to pass on 1 turn per 10 turns is an excellent design from Pallax. When more parts arrive I hope to finish it soon and present a video.