This product is a multi-functional scale design, a central measuring instrument, very convenient to use. It can be used to mark the center line of the work without tools and protect the working fingers from burrs. This line scriber is made of ABS plastic, which is sturdy and durable, stable in use, not easily damaged and harmless to the human body, and the line scriber can be used for a long time. This line scriber is of small size, does not occupy space and its length It is very easy to carry in a backpack when you go out, and you can put it anywhere in the house when not in use. Using this line scriber is very easy, just tap and drag the center line gauge to draw an accurate center line, it's a user-friendly design for most people, you only need only a few seconds to learn. This line scriber has a wide range of uses, suitable for panel grooves, pin seams, assembly work, drill marks, groove markings and assembly work, etc. It is very convenient for multiple purposes. Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display , there will be a certain color difference, depending on the physical object received.