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20 results for: semaphore

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A combined Semaphore and Light Railway Signal
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A combined Semaphore and Light Railway Signal

A Semaphore Signal on an American railroad
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A Semaphore Signal on an American railroad

A Dwarf Semaphore Signal and Split Switch on an American Railroad
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A Dwarf Semaphore Signal and Split Switch on an Am...

A Semaphore Signal on an American railroad
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A Semaphore Signal on an American railroad

Aerial Telegraph
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Aerial Telegraph

Aerial Telegraph
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Aerial Telegraph

Aerial Telegraph: Naval Semaphore
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Aerial Telegraph: Naval Semaphore

Robert Hooke's proposal for an aerial telegraph
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Robert Hooke's proposal for an aerial telegraph

Print published in France in 1803 showing methods of invading England
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Print published in France in 1803 showing methods ...

Perpendicular Canal Lift
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Perpendicular Canal Lift

Perpendicular Canal Lift
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Perpendicular Canal Lift

Sectional view of a telegraph tower using Chappe's
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Sectional view of a telegraph tower using Chappe's

Artist's impression of Claude Chappe
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Artist's impression of Claude Chappe

Aerial Telegraph
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Aerial Telegraph

Aerial Telegraph
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Aerial Telegraph

Sending a semaphore signal using flags
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Sending a semaphore signal using flags

Artist's reconstruction of the scene when Tsar Ncholas I
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Artist's reconstruction of the scene when Tsar Nch...

Claude Chappe's
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Claude Chappe's

Workmen building a telegraph station
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Workmen building a telegraph station

Napoleon's soldiers defending a telegraph post
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Napoleon's soldiers defending a telegraph post