Is this true?? (TI & watches)

Tony Duell ard at
Wed Feb 21 18:31:22 CST 2007

> > Before that (mt Cessna still has one) there were clocks that used
> > A solenoid and contact to wind a mainspring for the usual wound
> > clock style balance wheel and escapement.
> Used in automobiles (at least US ones) for donkey's years--and at 
> least in the case of US cars, one of the dashboard instruments that 
> failed first.  

They were used in UK cars in the 1950s and 1960s (I've repaired the one 
in a friend's Rover P4), but were replaced with transistor-maintained 
balance wheel clocks in the 1970s. Now, of course, cars have digital 
clocks, problaby just a program running on a microcontroller in the 
instrument cluster.


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