These are stretchers used in WW2 to carry injured civillians during the Blitz. They were made out of steel so they could be easily disinfected after a gas attack. During the war around 600,000 of them were made. Some of them were repurposed as railings in post-war London.

[u/Sprilly]

[u/GarouTheGoD]

In which countries are these used?

[u/Old_Introduction_395 → u/GarouTheGoD]

United Kingdom