Most of those in that shot were petroleum related IMO, particularly the ones with the lid/roof that falls with level. It turns out it is in China, so it was irrelevant to the guess ;-)
Ps, you got freepmail...
1,305 posted on 06/27/2018 8:28:48 AM PDT by Axenolith
(Drill mounted wire wheel... the place to go first for DNA samples of the mechanically inclined...)
