speaking tube


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speaking tube

A tube, usually of metal, used to transmit the voice from one part of a building to another, before the days of electronics.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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"Who are you?" Alejandro turned his ear toward the speaking tube even as he swung his lantern to hover before the gravestone to read the name there.
A little way along the rectory wall was a notice-board, and in the middle of the board was a speaking tube. The notice itself explained what was being offered: 'Boys and girls speaking up this pipe the sayings and texts taught by the Ven.
Old machinery stands beside new, and on the upper floors there is still a speaking tube used to warn the workers on the loading dock that kegs would be rolling their way.
As he began to recover movement between his fifth and his tenth month in the hospital, a relative visited and heard him croak through a speaking tube his satisfaction and gratitude at simply being alive.