A Machine Tool is a specialist type of production equipment. It can cut, bend, drill, press or stretch metal and other materials in a factory environment. The earliest machine tools were controlled by hand – an operator used wheels and levers to control the position of the workpiece and the movement of the toolhead (which can be a cutter or other device). Modern machine tools are computer-controlled, and can take instructions about what dimensions or geometries are required from computer-aided design systems. This automation creates high accuracy levels and speed.