Should you ever be looking for information on a weird old plug or socket, or are just interested in such things, the online "Museum of Plugs and Sockets" is one of those sites that makes the Internet seem like less of a terrible mistake than usual.

https://plugsocketmuseum.nl/

The page on old British "BS 546" is unmatched, in particular: https://plugsocketmuseum.nl/OldBritish1.html

#BestOfTheWeb #OldInternet #IndieWeb #Electronics #DIY

Museum of Plugs and Sockets: home page

Annotated display of 1000 domestic electrical plugs and sockets from all over the world, including classic and obsolete types.

@kadin This is also good, about different electric light sources. I probably first noted it about 2004. https://www.lamptech.co.uk/
Welcome to the Museum of Electric Lamp Technology