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Mechanical Principles

Close up we see pistons move up and down or side to side. Pendulums sway, the small parts of machinery move. Gears drive larger wheels. Gears within...

Genre: Documentary, Short
Countries: United States
Release Date: January 1, 1931
Year: 1931
Runtime: 10 min
IMDb Rating: Mechanical Principles (1931) on IMDb


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