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History of the manufacturer  

Barfield Mfg. Co.; Chicago

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Name: Barfield Mfg. Co.; Chicago    (USA)  
alternative name:
Kalbar Products
Abbreviation: barfield
Products: Model types
Summary:

Barfield Mfg. Co.; Chicago; Kalbar Products (simple tube tester) was one division of them.

History:

This manufacturer was suggested by Wolfgang Scheida.


Some models:
Country Year Name 1st Tube Notes
USA  50 Test-Tronic Electronic Tester   Simple tube tester, three valve holders, one indicator, no adjustments possible. Made by... 

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