Air Defense

 During the Interwar period many nations developed massive listening machines to detect aircraft acoustically.

 I took some toy musical instruments from the dollar store to use as the horns.
 

The base is probably at least 50 years old, it's a base from a Tootsietoy searchlight.

Shown here with a few 1/72nd scale troops for size.

After painting it looks a lot less goofy.

For a junk toy coupled with a few dollar store bits, I think it turned out okay.

It will work as an air defense for my 1938 US Army.

The finished device with painted wheels.