File:Murray Shutter Telegraph 1795.png
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Murray_Shutter_Telegraph_1795.png (670 × 554 pixels, file size: 42 KB, MIME type: image/png)
Summary
A diagram of the six shutter telegraph invented by Lord George Murray in 1795, and used by the British Admiralty to communicate from London to the English coast from then until 1816. For more about this system, see <a class="external free" href="http://en.wikipedia.org/wiki/Semaphore_line#U.K">http://en.wikipedia.org/wiki/Semaphore_line#U.K</a>. and it's references.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:01, 6 January 2017 | | 670 × 554 (42 KB) | 127.0.0.1 (talk) | A diagram of the six shutter telegraph invented by Lord George Murray in 1795, and used by the British Admiralty to communicate from London to the English coast from then until 1816. For more about this system, see <a class="external free" href="http://en.wikipedia.org/wiki/Semaphore_line#U.K">http://en.wikipedia.org/wiki/Semaphore_line#U.K</a>. and it's references. |
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