Includes information on Semaphore signals,. Ground signals, . Unusual signals, Electric signals,Signal boxes, leve! crossings, Signal box instruments, Single line instruments, Slotting arrangement, Detonators placing equipment, Interlocking equipment, Numerous B&W photographs and diagrams. Revised Edition 1984 OPC. Hardcover with dw. Good condition. 160pp. L6-RO4H-L5ZK
A Pictorial Record of Great Western Signalling (Vaughan)
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