Footage of new machine gun with periscope attached.
Invention for safe guarding gunners.
World War One; inventions. Weapons. American invention for safeguarding gunners. A gun (Lewis gun) mounted on a revolving stand; which allows the person to look through a viewfinder (periscope) below the actual gun; so as not to expose himself to enemy fire. Shots of a guy down in a hole; demonstrating this to a group watching.