XPost: alt.folklore.computers   
   From: ldo@nz.invalid   
      
   On Fri, 15 Nov 2024 00:34:06 +0000, David Wade wrote:   
      
   > You used a tuning fork with a thin "slit" attached to each leg. The   
   > slits were arranged so they opened and closed as the fork vibrated   
   > creating a tuned shutter.   
      
   Ah, of course. The “Bulova Accutron” method of accurate timing   
   calibration, before the technique was obsoleted by cheap quartz crystal   
   oscillators. ;)   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)