The Keyroad Plastic Ruler Hanging 30cm/12 is a durable, lightweight, and versatile measuring tool, designed for everyday use in schools, offices, or at home. With its practical hanging hole for easy storage and a clear scale, this 30 cm (12-inch) ruler offers precise measurements for drawing, designing, and general measuring tasks. Whether you're working on a math assignment, sketching, or doing craft projects, this ruler ensures accuracy and convenience.