The War tubas of Japan

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The War tubas of Japan

Before the advent of Radar, these acoustic listening devices from the 1930's were used to listen for incoming planes.

For scale see the anti aircraft guns in the background.

From http://www.futilitycloset.c... and http://cominganarchy.com/20... and http://en.wikipedia.org/wik...

war_tubas.jpg - 77.3kb
By netchicken: posted on 28-2-2008








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