Other Woodworking Tools Woodworking Tools, Aluminium Alloy T-square Hole Measuring Ruler, High Precision Gauge Hole Cross-calibration Assistive 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.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.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.Compact Size: Size: 6.8 x 4 x 0.9cm/, mini line ruler easy to carry and easy to use. Each hole has 0.5mm pitch and precise fine measurement helps you complete the woodworking better.Accurate: Precise marker rules can help you draw perfect horizontal lines while sliding rules along the working edge.