Parametric Ring Sizer (metric)

thingiverse

I've found a simple way to measure ring size with precision using a finger size gauge, or measuring ring. This tool can be tailored to fit any circumference without relying on rounding or tables. Instead, it uses straightforward calculations that are unfortunately limited by printer precision. When my own printer failed to produce the required tenth-of-a-millimeter accuracy, I discovered an effective workaround: combining a rotary tool with some sandpaper and a Vernier caliper. This solution proved surprisingly effective. The code for this project can be found at https://github.com/mhradilek/things/tree/master/ring-sizer