Have you lost the precious holder for your PT1000 temperature sensor and don't want to spend 120 EUR for a new one? Just print this small adapter and you will be fine! It fits rods of up to 14mm (the largest one I had in lab) and fits an M3 nut and screw for securing it in place. The nut and PT1000 are a rather loose, but nice fit when printed on MK4 with Devil Design PETG (+0,1mm of tolerance). 

The knob on the M3 screw is from this link and it fits nicely on the M3 bolts:
https://www.printables.com/model/838237-m3-allen-boltscrew-knob-cap