![](https://coimages.sciencemuseumgroup.org.uk/494/323/large_thumbnail_1994_7263.jpg)
Telegraph block instrument
- Made:
- 1855
Telegraph block instrument, semaphore type, Walker's, 1855, Stockton & Darlington Railway, No 216, type introduced by Mr C V Walker on the South Eastern Railway.
Details
- Category:
- Signalling & Telecommunications
- Object Number:
- 1985-8864
- type:
- block instrument
- credit:
- British Rail, Clapham