Features: Set up the tooling instruction on the software, directly enter the instruction (instruction: G90G21G38.2Z-50F100; G92Z1.6; G0Z20) (Different software interface is-different, but the instructions are the same). When the tool is-lowered, contact the tool, the metal plate stops, and then automatically rises. Take the tool, the tool has been completed, the table Z-axis coordinates should be-zero. Easy to Use: With a click, machines will automatically return to a predefined position, easily change and calibrate tools. Accurate: Greatly improve accuracy and save-time, accurately locate the working-surface, suitable for PCB engraving. Specifications: Material:Plastic Size:As Picture Shown Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1Set Z-Axis Router-Touch Plate Tool