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There's a great 1953 Navy fire control computer training film that explains some of these: https://www.youtube.com/watch?v=s1i-dnAH9Y4

That's different. The original link aims at mechanical contraptions while yours at mechanical computation. Still equally impressive and interesting

True, but there's a lot of overlap in the mechanisms. The video explains how they can be used for computation, which I find even more interesting.