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History of the manufacturer  

Nagel, Wilhelm; Freiburg (Br)

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Name: Nagel, Wilhelm; Freiburg (Br)    (D)  
Abbreviation: nagelwilh

Die Fa. Wilhelm Nagel, Merianstr. 26, Freiburg (Br) stellte, zumindest in den dreißiger Jahren, "Universal-Röhrenprüfer System Sticht D.R.G.M." her.

Quelle: Handbuch der Funk-Technik, 1935


This manufacturer was suggested by Lutwin Berndt † 5.10.14.

Some models:
Country Year Name 1st Tube Notes
33 Universal-Röhrenprüfer System Sticht D.R.G.M. [Messinstrument links]   Europafassung B5. Ab 1935 auch mit Adapter geliefert: Außenkontakt-5er/Topf, V, 5E, Aussen... 
33 Universal-Röhrenprüfer System Sticht D.R.G.M. [Messinstrument rechts]