This model turn a normal potentiometer into multi-turn potentiometer, because some time you want to make an enclosure for a board that come with trimpot, but adjusting trimpot is a pain and multi-turn potentiometers are expensive.
Cannot find a way to make a strong latch that doesn't snap-off when assembling so I've added 2 holes for securing with zip-tie or metal wire as pictured. It actually snap on, but can be shaken loose with enough force so I recommend doing this.
The author marked this model as their own original creation.