Semaphore Railway Signal Model STL

A classic lower-quadrant semaphore signal on a square base. A tall square post ends in a turned finial, with a single signal arm pivoting from a bracket near the top and a spectacle plate holding two round lens openings beside it. A railed lamp platform sits under the arm, reached by a long ladder up the post, and an operating rod runs down to a lever at the foot. Semaphore signals told drivers whether the line ahead was clear by the angle of the arm, with coloured lenses lit by a lamp at night…

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