this is a minerva tropic master 8 tube radio. i wanted a meter to give me a visual indication that i was exactly on a station so this was my solution.
i used only the needle/pointer system out of a cheapy 9$ buttstuffog meter.
links here to vids of my testing out the theory and a final vid showing it in use.
Test trial vid
https://www.dropbox.com/s/4296oyqy08ahky9/VID_20180929_191036.mp4?dl=0
complete vid
https://www.dropbox.com/s/206tcmvy9qekw4u/VID_20181002_210148.mp4?dl=0