1) Telecommunications equipment
Found on
https://www.crosswordclues.com/clue/fultograph
The fultograph was an early, clockwork image-receiving device, similar in function to fax machines. It took signals from the loudspeaker socket of a radio receiver and used an electrochemical process to darken areas of sensitised paper wrapped on a rotating drum. Invented by Otho Fulton, the system was used briefly in the late 1920s to broadcast i...
Found on
http://en.wikipedia.org/wiki/Fultograph
No exact match found.
