Model of a Portable Optical Telegraph. Model of a portable telegraph, incomplete. It consists of a triangle framework with a horizontal arm at the top and a suspension hook. The horizontal slats are provided with hooks, to which signals can be hoisted. The signals are missing. The framework can be fully folded.

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Size: 2385px × 2500px
Photo credit: © BTEU/RKMLGE / Alamy / Afripics
License: Licensed
Model Released: No

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