Because of the First World War, Wegener's book went unnoticed outside Germany. In 1922, however, a third (revised) edition was translated into English, French, Russian, Spanish, and Swedish, pushing Wegener's theory of continental drift to the forefront of debate in the Earth sciences.
A drilling machine, called a drill press, is used to cut holes into or through metal, wood, or other materials (Figure 4-1). Drilling machines use a drilling tool that has cutting edges at its point.
Press brakes are standard machines used for sheet metal processing. The used market offers a large choice of high quality used press brakes for sale, especially used hydraulic press brake and CNC press brake for sale. It is worth testing and measuring press brakes from the 1970s or 1980s.