Marconi thermionic triode valve
- maker:
- Marconiphone Company Limited
Marconiphone thermionic triode valve with box
Details
- Category:
- Radio Communication
- Object Number:
- Y7001.682
- Materials:
- metal (unknown), glass, plastic (unidentified) and cardboard
- Measurements:
-
Box containing valve
- type:
- triode valve and thermionic valve