Rolls-Royce worker working on a Merlin aircraft engine, c. 1942.
https://diqn32j8nouaz.cloudfront.net...ory_worker.jpg
Previously:
https://www.homemadetools.net/forum/...513#post104455
https://www.homemadetools.net/forum/...518#post155029
https://www.homemadetools.net/forum/...376#post161829
https://www.homemadetools.net/forum/...004#post160534
