McVitie Weston valve collection
- Made:
- circa 1935
- maker:
- Osram
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
LicenseOsram double diode triode valve, type DH30, B7 base
Science Museum Group
© The Board of Trustees of the Science Museum
Osram double diode triode valve, type DH30, B7 base, pinch marked DH30, (RMW/Y79A - McVitie Weston number), made by Osram, c. 1935.
