GOZWELL precision contour marking tool is an easier way to copy different shapes, ideal for tile laying, cutting laminate, carpet and ceramic, making tool molds. The adjustable pencil holder can hold 2-12mm marker pens, it can be moved up and down for easy paving end changes. The pulley and pointer design allows both ends to be used: drawing on the pulley side is smoother, and drawing on the pointer side is more accurate and easier. The fixture locks and locks after each adjustment to ensure high accuracy. It is especially useful for drawing the contours of uneven and complex objects. The tool is easy to use and can be easily adjusted with one hand. Made of durable plastic and stainless steel.