So, I could imagine something encoded in fixed logic that when connected, sent the appropriate letters to an appropriate teleprinter what the lake level was.
Wire recorders (and later tape recorders) to play back fixed voice messages were somewhat later.
No jukebox, sorry, though you're on the right track...
how about a mechanical arm that moves the record needle to different tracks depending on the water level?
Quotehow about a mechanical arm that moves the record needle to different tracks depending on the water level?Bingo! And a specially cut record with concentric rather than spiral tracks.
Yeah , you can still get records like that with musical loops on them. Wonder how reliable it was.
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