Multi Purpose: The T square ruler features a dual measurement system in both and imperial units, can be used for marking, positioning, drilling. Sturdy Construction: The woodworking ruler is made of aluminum alloy, which is sturdy and lightweight, hard wearing and not easy to deform, ensuring durability. Replaceable Drill Sleeve: This woodworking scriber marking line ruler can replace various specifications of drill sleeves, meeting different drilling needs. Versatile Use: The marking ruler is suitable for engineering, angle measurement, drawing, architectural design, and length measurement, is a practical tool for craftsmen, designers, artists, and engineers. Engraved Scale: The marking line ruler features clear and precise engraved scales, ensuring that your measurements are easy to read and accurate., Manufacturer: Jelquix