Automatic timer mechanism for lowering semaphore and traffic indicators
- Made:
- circa 1950
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
LicenseAutomatic timer mechanism for lowering semaphore and traffic
Science Museum Group
© The Board of Trustees of the Science Museum
Automatic timer mechanism for lowering semaphore and traffic indicators, as designed for buses and commercial vehicles, c.1950.
