Leveling probe

Tool for you're cnc milling machine to measure uneven surfaces. It is important if you encrave text or if you want to mill a pocket. You can even use it to make pcb boards.
The tool has a repeatability of 0.003 mm. See video https://www.youtube.com/watch?v=koA4m_rLmFk&feature=youtu.be and https://www.youtube.com/watch?v=v-4q_nYPfrM&feature=youtu.be

The parts I used are:
- printed parts (see images)
- microswitch Cherry DC3C-H1AA
- rvs tube 4.0 x 3.0 mm
- rvs round bar 3 mm
- rvs plunger (see drawing)
- glue
- two M3 allen screws and two M3 nuts