Fire alarm warning system. Historical illustration of a telephone-based French street fire alarm system. Systems like this were used in the early 20th century to summon firefighters to a fire before the development of a public telephone network. For a call being received,see image C024/6474. Artwork from 'Electricite' (1911) by Max de Nansouty,part of the 'Les merveilles de la science' series of 1867-1891 by Louis Figuier | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 3348 px × 5289 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |