This little clockwork device is very, very old, judging by the wear. There are no maker's marks anywhere on it. The back of its potmetal chassis is worn away where a metal thumb ring once rode, eroding the surface. Its stamped tin face bears the dents and scars of a thousand infinitesimal blows - a phenomenon about which William Gibson wrote beautifully in Neuromancer. Knobs on its back let you reset each of the dials inside, which spin smoothly and then click over - each moving the next one up by a power of 10 with every 10 pushes of the stamped-steel thumb button. Did it count baseball fans? Inmates at bed check? Pallets of cabbage thudding onto a flatbed, box after hard-picked box? It's not saying.
I know exactly what it is! It's a 'counter' used by excavator operators to count the gravel trucks as they load them with whatever it is that they are loading on that job. One click = one truck full. At the end of the day they can then refer to the amount of trucks they loaded ...mostly for billing purposes.
Hope this solves the mystery! :)