Tapatalk is being removed immediately. There are security issues and there is no justification for having it anymore. I apolgize to those die-hard Tapatalk users but you'll need to start using the forums mobile version instead.
As an MEng in FSE i agree with you, 50% of all powder fire extinguisers do not work, even having a pressure gauge, it is ridiculous to ask for anything else but eye candy in these objects, very nice FE BTW
I can think of one thing slightly more embarrassing than a non period correct fire extinguisher. A period correct one that does not work when you have a fire in period correct car . We don’t rely on period correct, date marked, tyres, we change them out approx every 10 years even if not worn. Even 10 should probably be more like 8.
De Q, do you mean even my new, 2020 powder extinguisher has only a 50% chance of working? If so I am going to carry both of them at all times.