Select-O-Speed transmission of 1964 Ford 5000 tractor. [2741x2150]
Source: http://i.imgur.com/iFuOueX.jpg
Screw compressor screws
Source: https://imgur.com/ZA84vut
Tap spindle [3456x5184]
Source: https://openpics.aerobatic.io/
Automated dough and filling depositor.
Higgs Boson Particle Detector
Source: https://imgur.com/QdfUJ6R
(via 7b10919ae4b3dbfc910a0eab69a33c53.jpg (1000×789))
Jumo 004