Paperhanger's Wheel Knife
The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted on a wooden handle, used for cutting wallpaper quickly and cleanly around moldings or door casings.
Maire, F. Modern Painter's Cyclopedia (Chicago, IL: Frederick J. Drake & Company Publishers, 1918)
Courtesy the private collection of Roy Winkelman