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.
Gear Driven Drill Press DP-1500G. 20 inch Gear Head Drill Press A Baileigh DP-1500G gear head drill press is rigidly designed for heavy drilling. The column is a massive 5-1/2 inch diameter to help reduce possible flexing during heavy feeds at maximum capacity, which is 1-1/2 inch through mild steel.