Today's collaboration with What is It? blog brings us this mysterious object: guess what it is and win a Free Neatorama T-Shirt!
Game rule is easy: leave your guess in the comment section (post no URL please, let others play). One more pic (and dimension info) at the What is it Blog?
Update 3/9/07: Here's the answer:
Cap bombs, a paper cap is inserted into the opening and then the device is dropped on the ground to detonate it. The one on the right is Admiral Dewey.
Congrats to Kent #23 who got it right!