Heres an interesting one i found on a Russian forum ...sad the state its in but looks like a home made one .
I can not work out the Mirror screw i can see i was a Nipkow televisor but the little mirror screw i am trying to work out how it was used in this or just put there for storage ..
Can any one read Russian
http://rw6ase.narod.ru/000/tw.html
http://rw6ase.narod.ru/000/rprl.html