Telegraphic block instrument
- Made:
- London
Telegraphic block instrument, Tyer's No. 1 train tablet apparatus, by Tyer & Co. Ltd, London.
Details
- Category:
- Signalling & Telecommunications
- Object Number:
- 2001-7982
- credit:
- British Rail, Clapham
Telegraphic block instrument, Tyer's No. 1 train tablet apparatus, by Tyer & Co. Ltd, London.