Engraving depicting the use of a speaking tube to communicate with someone in another room. Dated 19th century.
Engraving depicting the use of speaking tubes on the bridge of a naval vessel for communicating with other decks. Dated 19th Century.
Street hawker with a collection of coloured glass speaking tubes. Number 8 in the 1916 series �Cries of London, 2nd Series� by John Player & Sons....
Idealised cross-section of a ship, showing how communication between the bridge and the rest of the vessel took place. From Theodore Eckardt "Physics...
The homacoustic speaking tube. This model had both mouthpiece and earpiece which made it unnecessary to change position when speaking or listening to...
Using a speaking tube to communicate with someone or another room or on another floor. From ''Natural Philosophy'' by A. Ganot, London, 1887 Photo by:
Speaking tube, 1882. A cross-section of a ship, showing how communication between the bridge and the rest of the vessel took place. Before the...
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...
Father yelling at his teenaged son through a megaphone made out of rolled-up newspapers on August 12 in Duelmen, Germany. Photo by Ute...
Father yelling at his teenaged daughter through a megaphone made out of rolled-up newspapers on August 12 in Duelmen, Germany. Photo by Ute...
Father yelling at his teenaged daughter through a megaphone made out of rolled-up newspapers on August 12 in Duelmen, Germany. Photo by Ute...
Father yelling at his teenaged son through a megaphone made out of rolled-up newspapers on August 12 in Duelmen, Germany. Photo by Ute...
Mother yelling through a megaphone made out of rolled-up newspapers at her son on August 11 in Duelmen, Germany. Photo by Ute Grabowsky/Photothek via...
Fourteen-year-old boy yelling through a megaphone made out of rolled-up newspaper at his sister on August 11 in Duelmen, Germany. Photo by Ute...
Fourteen-year-old boy yelling through a megaphone made out of rolled-up newspaper at his sister on August 11 in Duelmen, Germany. Photo by Ute...
Fourteen-year-old boy yelling through a megaphone made out of rolled-up newspapers on August 11 in Duelmen, Germany. Photo by Ute Grabowsky/Photothek...
Fourteen-year-old boy yelling through a megaphone made out of rolled-up newspaper at his sister on August 11 in Duelmen, Germany. Photo by Ute...
smiling concierge on phone at hotel reception while colleague works at computer in lush lobby - 傳聲管 個照片及圖片檔
Engraving depicting the use of speaking tubes on the bridge of a naval vessel for communicating with other decks. Dated 19th Century.
police man using speaking tube or voicepipe in the house of commons, british , victorian history, vintage illustration 1881 - 傳聲管 幅插畫檔、美工圖案、卡通及圖標
Network monitors display a message announcing VoicePipe, a new ICG Communications IP telephone product, at ICG headquarters in Englewood, Colo.,...
Vox Populi Vox Dei, A large old woman shouts Vox Populi Vox Dei through a speaking tube or megaphone. Around her small men with bellows. Illustration...
Sympathizer of far-right parliament party the 'Jobbik' and former Hungarian Guard uses his metal speaking-tube nearby the State Opera House of...
An engraving depicting the bridge of HMS Inflexible , showing the speaking tubes for communicating with other parts of the ship. Dated 19th century.
