Tag:historic=optical_telegraph
historic = optical_telegraph |
Description |
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Semaphore system |
Group: historic |
Used on these elements |
Useful combination |
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Status: in use |
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A semaphore telegraph is a system of conveying information by means of visual signals, using towers with pivoting shutters (a.k.a. blades or paddles).
For example, the Prussian semaphore system was a telegraphic communications system used between Berlin and the Rhine Province from 1832 to 1849. It could transmit administrative and military messages by optical signal over a distance of nearly 550 kilometres (340 mi). The telegraph line comprised 62 stations each furnished with a signal mast with six cable-operated arms.
According to wikipedia, among the countries that have this feature are France, Sweden, United Kingdom, Prussia, Portugal, Spain, Danemark, Russia, United States, Canada, Egypt, India
How to map
Place a node at the centre point, or draw an area around the outline of the construction.
Tags used in combination
- historic=optical_telegraph mandatory
- name=*
- optical_telegraph=Station_NN
- network=Preußischer_optischer_Telegraf
- image=*
- wikipedia=*
- description=*
For razed optical telegraph use instead:
Rendering
See also
- Telegraphenradweg Berlin – Koblenz Telegraphenradweg Berlin – Koblenz
- Semaphore telegraph on Wikipedia
- Prussian semaphore system on Wikipedia