4 ms·
It even pre-dates plumbing - https://en.wikipedia.org/wiki/Smoke_testing_(mechanical) https://en.wikipedia.org/wiki/Smoke_testing_(mechanical) is a good overvie
by throwaway5752 5y ago
It even pre-dates plumbing - https://en.wikipedia.org/wiki/Smoke_testing_(mechanical) https://en.wikipedia.org/wiki/Smoke_testing_(mechanical) is a good overview.