Speaking Tube

A speaking tube or voicepipe is a device based on two cones connected by an air pipe through which speech can be transmitted over an extended distance. While its most common use was in intra-ship communications, the principle was also used in fine homes and offices of the 19th century, as well as fine automobiles, military aircraft, and even locomotives. For most purposes, the device was outmoded by the telephone and its widespread adoption. This device was also known as a "megaphone", but that use has since become superseded.

Read more about Speaking Tube:  Design, Maritime Use, Domestic Use, Gosport Tube, Modern Usage, See Also

Famous quotes containing the words speaking and/or tube:

    I am I because my little dog knows me but, creatively speaking the little dog knowing that you are you and your recognising that he knows, that is what destroys creation. That is what makes school.
    Gertrude Stein (1874–1946)

    Even crushed against his brother in the Tube the average Englishman pretends desperately that he is alone.
    Germaine Greer (b. 1939)