Telegraph block instrument (sending/permissive)

Telegraph block instrument (sending/permissive) Telegraph block instrument (sending/permissive)

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Telegraph block instrument (sending/permissive)
Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument (sending/permissive)
Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument; GNR. Pegging permissive 1-needle 3-position/3-indication ("Train On Line" indication on red, being replaced by "Line Occupied" on yellow). With wood-handle and catch-handle/spike commutator, and large rectangular ivorine plate inscribed "Dn Gds Wrenthorpe North". Claimed ex BR-Clapham.

Details

Category:
Signalling & Telecommunications
Object Number:
1994-7116
type:
telegraph block instrument
credit:
British Rail, Clapham