Tower no. 31
The picture shows tower no. 31 of the Prussian semaphore system located in Entrup near Nieheim in Northrhine-Westphalia, Germany. The Prussian Semaphore System was a telegraphic communications system used between Berlin and the Rhine Province from 1832 to 1849. It could transmit administrative and military messages by optical signal over a distance of nearly 550 kilometres (340 mi). The telegraph line comprised 62 stations each furnished with a signal mast with six cable-operated arms. The stations were equipped with telescopes that operators used to copy coded messages and forward them to the next station. Although electric telegraphy made the system obsolete for military use, simplified semaphores were still used for railway signals. (see Wikipedia)
Tower no. 31
The picture shows tower no. 31 of the Prussian semaphore system located in Entrup near Nieheim in Northrhine-Westphalia, Germany. The Prussian Semaphore System was a telegraphic communications system used between Berlin and the Rhine Province from 1832 to 1849. It could transmit administrative and military messages by optical signal over a distance of nearly 550 kilometres (340 mi). The telegraph line comprised 62 stations each furnished with a signal mast with six cable-operated arms. The stations were equipped with telescopes that operators used to copy coded messages and forward them to the next station. Although electric telegraphy made the system obsolete for military use, simplified semaphores were still used for railway signals. (see Wikipedia)