Feature:1.Made of aluminum alloy material, is wear-resistant, rust-proof, durable and hard to break. Surface is anodic oxidation treated, CNC tool processing. Clear engraving metric scales, accurate and easy to read.2.Marking ruler is precise, versatile, and easy-to-use. High hardness and durability.3.Accurate marking rules can help you draw perfect horizontal lines when sliding rules along the working edge. Fine marking holes and slots, and places the marking accurately on the target, making the woodworking ruler your perfect tool4. Micro-fine marking holes at every scale line allow you to instantly locate your sharp pencil point or scribe exactly on target with zero uncertainty and no eye strain! Perfect for DIY, engineer, carpentry, woodworking and home use. Specification:Name: Woodworking RulerMaterial: aluminum alloyColor: red + blackSize: 138*350mm(12 inch)/138*200mm(6 inch)Scope of application: woodworking, decoration design and usePackage Included:1 * Woodworking RulerInstruct:Find the hole corresponding to the scale and insert the pencil into the hole. Move the ruler to draw the line you need. (Each hole represents 1mm, and the distance between two holes is 1/32Inch)