Block instrument, Great Central Railway (sending)
Block instrument; GCR. Pegging 1-needle permissive 3-position/indication, with wood-handle and thumb-catch commutator. Traffolyte-plated "Up Goods Independent" and "Hexthorpe JCN", with GNR permissive needle-face and GCR needle-stops.
- Signalling & Telecommunications
- Object Number:
- block instrument
- British Rail, Clapham
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