Mechanical number counter

Mechanical 3 digit push button number counter. Fun fidget toy or use it for actual counting. Only non-printed part needed is a 9x35mm compression spring. This version doesn't have a separate reset function, but I've found the easiest way to reset is by unscrewing the cap 1 rotation, slide number gears towards the cap by finger and turn them. The counter can be turned backwards by pressing the button slightly and turning the first wheel by hand. Tips for smooth function:-Make sure su