This is a fairly simple, straight forward HP counter. Everything prints without supports. The numbers can optionally be inset with a different color, which are best glued in place with super glue. The frame has three options, one with an embossed pointer, one with an inset (which is what I printed here), and one with separate parts for color printing.
The colored versions (for printing on printers with multiple colors), there's no assembly.
Nothing special here, everything prints flat. Make sure that you place the wheels with the flat side down of course. If you are doing the insets for the numeric wheels, I noticed that the number 8 tends to print a little worse because of the bridging. Before gluing in the number 8, trim the bridges in the wheel. I only noticed this issue for 8.
I noticed that the uploaded STL files aren't oriented the way they should be printed. I'll fix this later, but the .3mf has all the models properly loaded and oriented.
The text model and the pointers are optional, and only needed if you are planning on doing the insets.