3th3r
New member
A new company, Techtube Valves, has setup up shop in the old Blackburn factory, and they will be producing new tubes there. They posted this old film documenting the factory history and the tube assembly process. A bit long, but very informative:
http://www.techtubevalves.com/about_us/film_reels.php
http://www.techtubevalves.com/about_us/film_reels.php