technology_FZH_GM_tubes_017
Special historical German vacuum tubes - marked as FZH41/1116, FZH79/520, (probably a laboratory Geiger–Müller tubes) and accessories, manufactured by Frieseke & Höpfner, Erlangen
author: Jan Helebrant
license CC0 Public Domain Dedication
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Uploaded on January 3, 2023
Taken on September 6, 2022
technology_FZH_GM_tubes_017
Special historical German vacuum tubes - marked as FZH41/1116, FZH79/520, (probably a laboratory Geiger–Müller tubes) and accessories, manufactured by Frieseke & Höpfner, Erlangen
author: Jan Helebrant
license CC0 Public Domain Dedication
75
views
0
faves
0
comments
Uploaded on January 3, 2023
Taken on September 6, 2022