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.
Affordable Drill Presses. Choose between a line of heavy-duty bench top or floor mount drill presses from Northern Tool. Expect nothing less than power, accuracy and versatility from these machines. Floor press head tilts 70Â° left and 90Â° right allowing you to maneuver hard-to-move work pieces.