Function: With the T-ruler marking, follows the edge of your work piece to mark perfectly placed horizontal or vertical lines, micro-fine marking holes and slots place your mark exactly on target, makes the woodworking ruler a perfect tool for you. Aluminum Alloy Material: Made of aluminum alloy, it is wear-resistant, rust-proof and durable.It has torsion resistance, durability and corrosion resistance. Suitable for scribing wood. Easy to Use: Marking ruler is precise, versatile, and easy-to-use. Find the hole corresponding to the scale, insert the pen into the hole, and draw the desired line. Accurate: Precise marker rules can help you draw perfect horizontal lines while sliding rules along the working edge. EXQUISITE CRAFTSMANSHIP: With exquisite craftsmanship, light and practical woodworking ruler can assist woodworking marking.