McVitie Weston valve collection
- Made:
- 1927 in 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
LicenseBTH Mazda output triode valve, type B
Science Museum Group
© The Board of Trustees of the Science Museum
BTH Mazda output triode valve, type B.12, B4 base, green paper label attached, (RMW/C77A - McVitie Weston number), by British Thomson-Houston Company Limited, 1927.
