Odd Shout-O-Phone Spans Border (Jun, 1940)

Odd Shout-O-Phone Spans Border

FRIENDS and relatives on opposite sides of the French-Swiss border must exchange greetings across a forbidden zone seventy feet wide, but that doesn’t matter to the well-equipped conversationalist shown at the left. He talks through a megaphone, and listens with ear trumpets like airplane detectors, while his binoculars complete the illusion of nearness.

2 comments
  1. More Acoustic Locators « KuiperCliff says: April 3, 20089:06 am

    [...]   The Shout-O-Phone [link] [...]

  2. [...] (image via: Modern Mechanix) [...]

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