A pantograph is a mechanical device used to copy and scale drawings or designs. It consists of a system of linked rods that can move in a coordinated manner. When one part of the pantograph is moved, the other parts follow, allowing for precise duplication of shapes and sizes. This tool is commonly used in art, engineering, and drafting. In addition to its use in drawing, the term "pantograph" also refers to a device used in trains and trams. This type of pantograph collects electricity from overhead wires to power the vehicle. It is essential for the operation of electric trains and helps ensure a continuous power supply during travel.