Baird Phonovision

[Doodlebug]

I made my 'Edikow' machine (EDIson/NIPkow) some years ago.
Baird used large dia concert cylinders whilat I tried with
standard dictaphone cylinders, recording two frames per rev.
Not very successfully I m ght add.

http://www.christerhamp.se/phono/noble.html
http://www.retinascope.co.uk/nbtv.html