McVitie Weston valve collection, STC valve, type 4101D
This image is released under a CC BY-NC-SA 4.0
Licence
License this image for commercial use at Science and Society Picture Library
LicenseSMG00313228
Science Museum Group
© The Board of Trustees of the Science Museum
STC valve, type 4101D, (RMW/E142 - McVitie Weston number)
Science Museum Group
© The Board of Trustees of the Science Museum
STC valve, type 4101D, (RMW/E142 - McVitie Weston number), by Standard Telephones and Cables Limited.
