Wade Bequest collection of valves: Very small triode radio valve
- PART OF:
- Wade Bequest collection of valves
- Made:
- England, Germany and United States
This image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseSMG00237680
Science Museum Group
© The Board of Trustees of the Science Museum
Wade Bequest collection of valves: Very small directly-heated triode radio valve. Spherical bulb with B4-2 base. Non-British manufacturer, probably Dutch.
