Behind The Photo

This is a fascinating piece of history! The image shows a person operating what appears to be an acoustic locator—a device designed for detecting distant sounds. These devices were used particularly during World War I and World War II before radar technology became prevalent.

The intricate structure includes large, funnel-shaped components mounted on a tripod and connected by pipes. These funnels acted as directional microphones, amplifying sound from specific directions. Operators, like the person shown in the image, would use these devices to detect the approach of aircraft or other distant noises, giving early warning to military personnel.

It’s amazing how inventive people were in harnessing sound for surveillance purposes before electronic advancements.