Re: Restoring an unloved Bush VHF90A
This discussion brings to mind the transparent knobs fitted to Telequipment D83 and D75 oscillocopes in the early 1970s. The same knob was also used on CT71 curve tracers. Not only do they become opaque with age but they eventually become sticky and disintegrate whilst exuding a very unpleasant odour. They definitely were not a triumph of polymer engineering.
Alan
|