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.
How to Use a Drill Press Machine: A drilling machine comes in many shapes and sizes, from small hand-held power drills to bench mounted and finally floor-mounted models. They can perform operations other than drilling, such as countersinking, counterboring, reaming, and tapping large or small holes.
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.