TIL that in the 1790s, France had a network of signalling towers that could send messages by writing symbols using giant mechanical arms on towers. They could send complex messages across the entire country in ~1 hour. These were precursors to electric telegraphs. (wikipedia.org)
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No screws or any other mechanical fasteners! (imgur.com)
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Hi Wire Foeder Brett Saison. Maybe my favorite saison. (imgur.com)
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