Simple add-on to generate any ring size in Blender

Blender 2.7

This is an old add-on that works with Blender 2.7. Blender 2.8+ will not run this. You can still use it to check out ring sizes in the code, though.

How to add addons?

Here you can read the official documentation about this. In short:
Preferences ‣ Add-ons ‣ Install

The add-on

Just add this python script[github.com] as an add-on