Does anyone here understand Italian?
From here:
http://www.na.infn.it/Museum/schede/59.htm
It's not a speaker is it? Kind of looks like something Bob Carver would come up with if he lived a hundred years ago.

From here:
http://www.na.infn.it/Museum/schede/59.htm
It's not a speaker is it? Kind of looks like something Bob Carver would come up with if he lived a hundred years ago.