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Model of an Optical Telegraph. Model of an optical telegraph on a foot. It consists of two posts associated by an axle why an arm runs; The two ends of that arm are two narrow arms attached, one with a counterweight, the other without. The main arm is moved by a rope walking over two discs on one side of the posts; The outside arms are moved with hoists on a drum between the posts and topped on cleats against the posts. In the rectangular positions with respect to the main arm, the outside arms can be fixed with a spring. Scale 1:22 (Scale by model).

Model of an Optical Telegraph. Model of an optical telegraph on a foot. It consists of two posts associated by an axle why an arm runs; The two ends of that arm are two narrow arms attached, one with a counterweight, the other without. The main arm is moved by a rope walking over two discs on one side of the posts; The outside arms are moved with hoists on a drum between the posts and topped on cleats against the posts. In the rectangular positions with respect to the main arm, the outside arms can be fixed with a spring. Scale 1:22 (Scale by model).

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Media Info

Credit: piemags

Media ID:

Recording Date: Jan 1, 1900

Media Size: 2,149×2,500 Pixels

Model of an Optical Telegraph. Model of an optical telegraph on a foot. It consists of two posts associated by an axle why an arm runs; The two ends of that arm are two narrow arms attached, one with a counterweight, the other without. The main arm is moved by a rope walking over two discs on one side of the posts; The outside arms are moved with hoists on a drum between the posts and topped on cleats against the posts. In the rectangular positions with respect to the main arm, the outside arms can be fixed with a spring. Scale 1:22 (Scale by model).

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