![Telegraph block instrument; G. K. Winter/J. Craik (Patents: 1880/1885)](https://coimages.sciencemuseumgroup.org.uk/421/749/large_thumbnail_1909_08_pt01__0008_.jpg)
Three telegraphic signalling block instruments
![Three telegraphic signalling block instruments](https://coimages.sciencemuseumgroup.org.uk/298/645/small_thumbnail_1909_08_pt01__0001_.jpg)
![Three telegraphic signalling block instruments](https://coimages.sciencemuseumgroup.org.uk/298/647/small_thumbnail_1909_08_pt03__0001_.jpg)
![Three telegraphic signalling block instruments](https://coimages.sciencemuseumgroup.org.uk/298/646/small_thumbnail_1909_08_pt02__0001_.jpg)
Three telegraphic signalling block instruments, double- and two single-needle versions, patents of G.K.Winter and J.Craik, 1880 and 1885, cases removed to show mechanism.
Details
- Category:
- Signalling & Telecommunications
- Object Number:
- 1909-8
- type:
- telegraph instrument
- credit:
- Imperial Institute of the United Kingdom of the Colonies & India