AMERICAN MARCONI - TYPE CM-425 and CM425-1  KEYS

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CM-425 views. This key has contacts rated  for 250 volts at 20 amps, 500 cycles . (Images provided by Lewis Bodkin,

 
 
The CM425-1 was am auxiliary hand key made for the US Navy. Dated 1917, this key is rated for 250 volts at 20 amps.  Click on image to enlarge. (Source: Kreuzer collection)


 Credits and References:

1) Lewis Bodkin [05bodkin555(at)gmail.com]

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Dec 28/20