McVitie Weston valve collection
- Made:
- 1929 in United States and Canada
- maker:
- Mullard Limited
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
LicenseMullard output triode valve, type D.F.A.6
Science Museum Group
© The Board of Trustees of the Science Museum
Mullard output triode valve, type D.F.A.6., B4 base, painted C89 Onyx, filament broken, glass envelope loose, (RMW/D59 - McVitie Weston number), by Mullard Limited, 1929.
