This is a very rare, nice clean, 7" long antique adjustable screw wrench marked "BENTON" on the solid jaw, and "MADE IN U.S.A. PAT PENDING" on the side of the moving jaw. This wrench allows the user to move the jaw into place quickly by turning the handle clockwise, the thread in the handle mesh with the gear type rail you can see in the pictures, it work very smoothly. As you can see most of the nickel plating has come off, but the wrench still looks nice, with good smooth surfaces, a few small dings, otherwise this wrench is in A+ condtion, jaws and bar very straight and nice, little sign of use! A very unique wrench!