2 Free Images of Siemens Vacuum Tubes

cc-zerofiles uploaded by daderotx-ray tubesvacuum tubes in the röntgen-gedächtnisstätte würzburg
Tube, Siemens - Röntgen-Gedächtnisstätte Würzburg - Würzburg, Germany - DSC04299
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Siemens-Pantix P 40 tube - Röntgen-Gedächtnisstätte Würzburg - Würzburg, Germany - DSC04335
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