Material: Plastic Size: 30cm Color: Transparent Quantity: 2 pieces Package Content: 2 x Ruler 1. Wide Applications: This versatile measuring ruler includes a protractor for drawing various figures, arcs, curves, horizontal and vertical parallel lines. Its size is ideal for drawing on white paper at a small desk, taking up minimal space. Excellent for creating parallel lines. 2. More Details: Each centimeter features a circular hole for drawing circles and ellipses. The ruler has a built-in roll with clear scale markings for smooth, stable, and easy sliding during use. Resistant to tilting, with clearly marked scales for easy reading. Includes common measurement formulas for quick reference during use. 3. Multiple Uses: Ideal for artists, students, model makers, and designers. This rolling ruler assists in work or study, helping students develop manual dexterity and creativity when drawing design sketches. Works well with graph paper and as a straightedge for precise line drawing. 4. Quality Material: Made from clear, lightweight plastic for easy portability. The transparent design allows visibility of underlying text or numbers, preventing obstruction during drawing. Note: All measurements are manually taken; please allow 1–3 cm variation. Color may slightly vary due to lighting and screen display differences. Actual product may differ slightly. Delivery Quantity: As shown in the main image