Wade Bequest collection of valves: early tetrode radio valve by Marconi-Osram
- PART OF:
- Wade Bequest collection of valves
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
LicenseSMG00237645
Science Museum Group
© The Board of Trustees of the Science Museum
Wade Bequest collection of valves: early tetrode radio valve by Marconi-Osram. With B4/M with side terminal and top terminal.
