![](https://coimages.sciencemuseumgroup.org.uk/55/897/large_thumbnail_1959_0212__0001_.jpg)
Marconi Osram thermionic diode valve
- maker:
- Marconiphone Company Limited
![Marconi Osram thermionic diode valve](https://coimages.sciencemuseumgroup.org.uk/475/172/medium_smg00243546.jpg)
Marconiphone thermionic diode valve with cardboard box.
U35 GH 2
Details
- Category:
- Radio Communication
- Object Number:
- Y7001.684
- Materials:
- plastic (unidentified), glass, metal (unknown) and cardboard
- Measurements:
-
overall: 100 mm 23 mm,
- type:
- thermionic valve and diode