This is a hit point tracker for tabletop games. It comes in 2-, 3-, and 4-digit sizes, as well as a 2x2 digit size with a spacer in between.
Print two end caps, the right core size, and the right number of dials (plus a spacer for the 2x2). A bit of glue is necessary to connect the end caps – be careful not to use too much, or squeeze out will ruin your build.
Great for Dungeons and Dragons hit points, Magic: The Gathering life points, or anything else you need to count.
A bit of super glue is necessary to glue on the end caps. Don't use much, squeeze-out can get into the dials.