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A combined Semaphore and Light Railway Signal.

Illustration depicting a combined Semaphore and Light Railway Signal. When the arm is horizontal the red light shows and 'Danger' is signalled. When the arm is hanging at 45 degrees the green light shows and 'Proceed' is signalled. The right hand view shows the signal at rest. Dated 19th century.
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Titel:
A combined Semaphore and Light Railway Signal.
Untertitel: Siehe automatische Übersetzung
Illustration depicting a combined Semaphore and Light Railway Signal. When the arm is horizontal the red light shows and 'Danger' is signalled. When the arm is hanging at 45 degrees the green light shows and 'Proceed' is signalled. The right hand view shows the signal at rest. Dated 19th century.
Bildnachweis:
Album / Universal Images Group / Universal History Archive
Freigaben (Releases):
Model: Nein - Eigentum: Nein
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Bildgröße:
5737 x 3655 px | 60.0 MB
Druckgröße:
48.6 x 30.9 cm | 19.1 x 12.2 in (300 dpi)
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