Scribing tool is mainly used for machining the scribing step, widely used in single or small batch production into. Dui underlined the basic requirements are clear lines of symmetry, shape, size and accurate positioning. Since the scribe line with a width generally requires accuracy 0.25-0.5mm. It should be noted that the machining accuracy of the workpiece is determined not fully crossed, but in the process should be guaranteed by measuring. Scribing tools common dial plan, planning regulations, center punch (like punch), rectangular device, jacks, vernier height gauge, V-shaped iron, etc.