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bn:26691820n
Noun Concept
EN
Chappe telegraph  semaphore telegraph
EN
A tower with pivoting shutters, also known as blades or paddles, used for conveying information by means of visual signals, read when the shutter is in a fixed position. Open English WordNet
Definitions
Relations
Sources
EN
A tower with pivoting shutters, also known as blades or paddles, used for conveying information by means of visual signals, read when the shutter is in a fixed position. Open English WordNet
IS A
telegraph
PART OF
optical telegraph
Open English WordNet
EN
semaphore telegraph, Chappe telegraph

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