Hitpoint tracker

Simple yet practical design for a hitpoint tracker for your choice of RPG. Can track up to 999 hp. As always, if you build it, let me know how well it works out. I suspect there might be an issue with it, but I have a solution for it too, so if it crops up I can alter the design.
Don't forget to tip your designers.


Edit: I went ahead and did a 2.0 design that I believe is far superior to this version. I am leaving it up in case people disagree with me and want this design instead.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/k6RJYSRDqDH