Category:Optical telegraphy
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[[Image:Optical Telegraph Old Prussian Optical Telegraph Attribution.jpg|thumb|right|A replica of the controls on a Prussian Optical Telegraph - Image by Super Bass]] | [[Image:Optical Telegraph Old Prussian Optical Telegraph Attribution.jpg|thumb|right|A replica of the controls on a Prussian Optical Telegraph - Image by Super Bass]] | ||
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| + | A system of conveying information by visual signals, usually using towers with flags or shutters | ||
[[Category:Telegraphy|{{PAGENAME}}]] | [[Category:Telegraphy|{{PAGENAME}}]] | ||
Latest revision as of 21:24, 14 January 2013
A system of conveying information by visual signals, usually using towers with flags or shutters
Pages in category "Optical telegraphy"
This category contains only the following page.
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Media in category "Optical telegraphy"
This category contains only the following file.
