Features The manual ruler provides accurate measurements through the aluminum chain, providing appropriate tension for drawing straight lines parallel to another line or reference point. Good Transparency: This parallel navigation ruler has good transparency, does not cover too much information, and allows you to view the entire page. Accurate Scale: The measuring ruler has an accurate scale and is easy to read, making it a reliable tool for drawing and measuring. Easy to Draw: The nautical ruler is adjusted using stable aluminum chains that are smooth and durable, allowing for easy creation of parallel reference lines. Size Information: This ruler is approximately 45 cm (17.72 inches) long and is well suited for charting tasks. Product Information Product Name: Parallel Ruler Color: Transparent Material: Acrylic Size: 450 mm Packing List: 1 x Parallel Ruler Note: 1. Due to extended shipping times, the item may be damaged during transit. If damage occurs, please through the official platform before leaving feedback, and we will assist you promptly. 2. Size may vary by 1–3 cm due to manual measurement. 3. Colors may vary slightly due to differences in monitor displays.