A steel ruler is a measuring tool made from durable stainless steel, designed for accuracy in various tasks such as drawing, measuring, and crafting. It typically features a flat, straight edge to ensure precise measurements. Commonly marked with both metric (centimeters and millimeters) and imperial (inches) units, the ruler offers clear, engraved markings that resist fading over time. Its metallic construction provides a sturdy feel and makes it resistant to bending or breaking, ideal for both office use and technical drawing. Additionally, the surface of the ruler is smooth and polished, allowing for easy sliding along paper or other materials.