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.
Floor Drill Press is the perfect choice for drilling metal or wood. Features power, accuracy and versatility packed into a sturdy floor mount base. Has a powerful 1 HP, 120V motor with 12 speeds that generate 340&#150;2,860 RPM.