This is an experimental / test version of another more conventional parametric hinge design. The original may be found here. https://www.thingiverse.com/thing:2187167
I use this version to experiment with variations that might clutter or unnecessarily complicate the original.
If you are not interested in the experimental features, which I don't always thoroughly test, then I would recommend using the original, linked above. The original is less likely to have bugs, and is also maintained and updated more frequently than this experimental version.