rfwjr Posted September 3, 2015 Report Share Posted September 3, 2015 I am not sure how much of an antique this is. A co-worker found this buried in his dad's garage. Quote Link to comment Share on other sites More sharing options...
Peter Argyropoulos Posted September 22, 2015 Report Share Posted September 22, 2015 Later 50s, early 60s would be my guess. Does it still work? Quote Link to comment Share on other sites More sharing options...
Atlas2000 Posted September 22, 2015 Report Share Posted September 22, 2015 Similar one on page 276 of this 1957 Popular Mechanics. Quote Link to comment Share on other sites More sharing options...
MikeyB Posted September 22, 2015 Report Share Posted September 22, 2015 Was that just for continuity testing? We had a couple of those in the engine rooms Quote Link to comment Share on other sites More sharing options...
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