Record Name | Ans_04845-S007 |
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Photographer | Unbekannt |
Dating | 1941 |
Caption | ETH/Institute for High Frequency Technology. Labeling: Tuning of the multiple telephony system in an automatic telephone exchange. |
Caption (German) | ETH/Institut für Hochfrequenztechnik. Beschriftung: Abstimmung des Vielfachtelefoniesystems in einer automatischen Telefonzentrale |
Physical description | Fotografie : Silbergelatine-Abzug |
Format | 24 x 30 cm |
Colour | schwarz/weiss |
Orientation | Querformat |
Categories |
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License | Public Domain Mark |
Copyright notice | ETH-Bibliothek Zürich, Bildarchiv / Fotograf: Unbekannt / Ans_04845-S007 / Public Domain Mark |
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