By request of viewers here is a short show of the drawings and models Boris Malovic made of the magnetic base and the indicator arm. The drawings are for free. Send me an e-mail and I will send them to you.
How nice it is that there still are people who want to contribute so selflessly. Thank you so much Boris! If you feel like doing something in return, consider donating to War Child. Especially in these days, the innocent children in war zones need all the support we can give them.
https://www.warchild.net/
Download link for the free Solidworks viewer (needed to see and manipulate the 3-d models): https://www.edrawingsviewer.com/download-edrawings.
No music this time, sorry. Too much to tell, too short video.