. Building and repairing railways ... : Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways, . Fig. 80i. SEMAPHORE STAND. This Semaphore Switch Stand is designed to provide an effectiveand satisfactory signal for switches thrown by hand. The ordinarycolor and shape target is replaced by a position signal in the form ofa semaphore blade. It is equipped with revolving lamp or spectaclesas required. It can be adapted to any form of stand having a revolvingmast. CONSTRUCTION. 169 I

. Building and repairing railways ... : Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways, . Fig. 80i. SEMAPHORE STAND. This Semaphore Switch Stand is designed to provide an effectiveand satisfactory signal for switches thrown by hand. The ordinarycolor and shape target is replaced by a position signal in the form ofa semaphore blade. It is equipped with revolving lamp or spectaclesas required. It can be adapted to any form of stand having a revolvingmast. CONSTRUCTION. 169 I Stock Photo

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Reading Room 2020 / Alamy Stock Photo

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