The marker is precise, versatile, and easy to use. Find the hole corresponding to the scale, insert the pen into the hole, and rotate the line you want. Portable perforated holder, it has torsional strength and corrosion resistance. Precision T-marking allows you to draw perfectly horizontal lines as you move the line throughout your work. Excellent workmanship, quality assurance, accurate calibration, easy to use. (Note: This is only 59 holes). Mini aluminum alloy woodworking made of aluminum alloy by precision equipment.