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.
Metal Drill Presses. Our drill presses are designed for drilling in metal and can be used for a variety of jobs such as tube notching, boring with annular cutters or forming with our Flowdrill system. Options include tapping and stepless variable speed. Choose from floor standing models and benchtop drill presses. Filter Selection Â».