Bruce333
Member
for a tank! Wow! I had never even considered that this existed.
http://theshapeofdays.com/2004/11/they_call_it_a_schalldaempfer.html
http://www.silencertests.com/gallery/Oddities
http://theshapeofdays.com/2004/11/they_call_it_a_schalldaempfer.html
http://www.silencertests.com/gallery/Oddities