Picture pantograph

The utility model relates to an image amplification or decreased drawing tool. This drawing tool is composed of an abscissa master arm, a vertical coordinate master arm, an abscissa enlarge arm and a vertical coordinate enlarge arm. These arms are hinged together mutually. The abscissa master arm and the vertical coordinate master arm always keep parallel just as the parallelism between the vertical coordinate master arm and the abscissa enlarge arm. A cramping apparatus X which is used to clamp a pen in fixed on the end socket of the enlarge arm.