The front end of the steam locomotive 'Princess Elizabeth' showing the Walschaerts valve gear

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Size: 4186px × 2786px
Photo credit: © patrick nairne / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: arm, british, combination, coupling, crosshead, engine, engineering, english, front, gear, lever, loco, locomotive, mechanical, rods, steam, valve, walschaerts