Sujet
Communication by speaking tube, c1850. Artist: Unknown
Légende
Communication by speaking tube, c1850. A waiter serving clients in a restaurant, speaking to chefs at work in the kitchen on the floor below, using a speaking tube. Before the invention of the telephone this device was used for communication between different levels in houses, warehouses and ships. Educational print published in Wurtemberg, Germany c1850.
Oxford Science Archive
Date
1850
Crédit
Photo12/Heritage Images
Notre référence
HRM19B64_211
Model release
Non
Licence
Droits gérés
Format disponible
49,9Mo (2,7Mo) / 31,8cm x 39,4cm / 3753 x 4651 (300dpi)