The author remixed this model.
I made this after using several models to try and calibrate my 3D touch accessory, but I found that the Z-off set was too much, so I added a variable-length hanging point, so it would be better for a wider range of extruders.
In short: Wider range of altitude to compensate for a decent Z-offset, and works perfectly with the cheapest BL touch, ‘cause good things don’t have to be expensive. Enjoy!