Summary
The Technical Committee on Physics of the Directorate of Inventions and Camille Gutton test the inductive balance. This device is used to search for World War I unexploded shells in fields needing to be recultivated.
Shell probing device
Reference
6542
Duration
00:03:02
Production year
1920
Versions
Original material
HD
16/9
BW
Mute
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