Material: Made of premium acrylic sheet, high hardness and long service life. Function: Designed to draw bearing lines or course lines, indicating the degree or amount of direction. Precise Scale: The scale is engraved for accuracy and easy readability. Good Transparency: The navigation parallel ruler offers high transparency, minimizing obstruction of underlying information. Easy to Draw: Use both hands to hold each end of the ruler, moving alternately in parallel motion. Sturdy links provide consistent tension for drawing lines parallel to another line or reference point. Material: Acrylic Color: As shown Package Contents: 1 x Parallel Ruler Note: Light reflection and different displays may cause slight variations in the color of the item in the picture compared to the actual product. Measurement allowed error: +/- 1-3 cm. Please carefully check the product size and dimensions to ensure it meets your requirements. Detailed product information, including features and specifications, is provided in the title and description. We aim for your complete satisfaction. If you have any questions, feel free to reach out. We are here to assist you. Thank you for choosing our product. We hope you enjoy it!