Description: 【Aluminum Alloy Construction】: Crafted from aluminum alloy, this woodworking marking ruler is designed to wear resistant and rustproof, ensuring a long service life 【Versatile T Shaped Design】: The T shape ruler allows for both horizontal and vertical line marking, with the ability to mark vertical lines ranging from 5mm to 162mm, suitable for engineering, measurement, drawing, architectural design, craftsmen, designers, artists, and engineers 【Accurate Marking with Clear Scale】: Features clear and accurate scale for accurate line marking every time, enhancing your woodworking projects' precision 【Easy to Use Hole System】: Each hole on the ruler represents 1mm. Simply find the corresponding hole, insert your pencil into it, and slide the ruler to draw the desired line effortlessly 【Compact Dimensions for Convenience】: With dimensions of 17cmx3cmx9.8cm, this Woodworking Scriber T Square Ruler is compact yet highly functional, making it an essential addition to any woodworker's toolkit Specification: Material: Aluminum Alloy Color: Blue   Size Chart: 17cmx9.8cmx3cm/6.69inchx3.86inchx1.18inch Package Includes: 1 Woodworkings Scriber Marking Line Ruler Note: Please allow slightly errors 1-2cm differences due to manual measurement.