Illustration depicting a Semaphore Signal on an American railroad. One arm governs several tracks, the number of the track which is clearly shown on the indicator disk. The safety position was with the blade at 60 degrees in the lower quadrant. Dated 19th century

Illustration depicting a Semaphore Signal on an American railroad. One arm governs several tracks, the number of the track which is clearly shown on the indicator disk. The safety position was with the blade at 60 degrees in the lower quadrant. Dated 19th century
SuperStock offers millions of photos, videos, and stock assets to creatives around the world. This image of Illustration depicting a Semaphore Signal on an American railroad. One arm governs several tracks, the number of the track which is clearly shown on the indicator disk. The safety position was with the blade at 60 degrees in the lower quadrant. Dated 19th century by Image Asset Management/World History Archive is available for licensing today.
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DETAILS
Image Number:  1746-111357176Rights ManagedCredit Line:Image Asset Management/World History Archive/SuperStockCollection:Model Release:NoProperty Release:NoResolution:3964×5290
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