Description Specification: Item Type: Multipurpose Roller Ruler Material: Plastic Size: 30 / 11.81 in Color: As Shown Quantity: 2 Pieces Feature: The ruler is made of high-strength transparent plastic, which is practical and durable, and allows you to draw without skipping some important graphics or texts. The rolling ruler has a clear scale and is easy to observe. It is also marked with two scale units, metric and inch, for easy conversion. The ruler is a great universal tool for creating parallel lines, cut lines, angles, circles, etc. It is an essential tool for illustrators and designers. The versatile roller ruler is suitable for designers, students and teachers, technical drafters, architects, engineers and artists. Noticed: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2. Due to different personal measurement techniques, there may be 1-2mm physical error. THANKS The package includes: 2 Pieces Rolling Drawing Ruler