Originally Posted by CanoeStream
I recall public school clocks that seemed synchronized. The hand would jump to the next minute. Whatever classroom you were in, that last minute jump at the end of a period would happen right when the bell rang indicating time to go to your next class.
Those clocks in theSioux City, IA. old, OLD
East Junior High School building on Morningside Avenue (before they made the old East High the junior high in 1972 and both buildings are now gone, I believe) had pneumatic clocks... all synchronized to a main pneumatic clock in the hallway outside the admin offices. A pump would drive air through the system advancing the hands one second. It was a fascinating system, and something I'd forgotten until just now. Damn I'm old. <sarchasm ON> Thanks
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