A friend of mine asked me to 3d print a pottery Gauge but I didn't find any good model online.
Thus, I designed this one to help him. 

It is designed to be printable in the prusa mini (if you put the long parts diagonally).

No support required.

For the full model you will need to 3d print:

5x Nut

2x Needle

2x Screw

2x Needle Arm