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 clear viewing of the entire page. Accurate Scale: The measuring ruler features an accurate scale that is easy to read, making it a reliable tool for drawing and measuring. Easy to Draw: Our nautical ruler is adjusted using stable aluminum chains that are smooth and durable, enabling effortless drawing of parallel reference lines. Size Information: This ruler is approximately 45 cm long, ideal for charting tasks. Product Information Product Name: Parallel Ruler Color: Transparent Material: Acrylic Size: 450 mm Packing List: Parallel Ruler x 1 Note: 1. Due to extended shipping times, items may be damaged during transit. If damage occurs, please through the official platform before leaving feedback, and we will assist with resolution. 2. Size may vary by 1–3 cm due to manual measurement. 3. Color may differ slightly due to monitor display variations.