I had no idea the Otis board idea had changed so much. I've been away too long lolWow! Thank you for this, I had a feeling.
For the newbies out there, I get so many questions, the Otis boards are not screen accurate, they weren’t used in any SW film.
Even closer I’ve found Clare relays and the metal was REALLY high temp solder, I tried to reshape the tinning a little and failed. Those are industrial as far as I know.