Features The manual ruler provides accurate measurements through the aluminum chain, providing appropriate tension for drawing straight lines parallel to another line or reference points. 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, allowing effortless drawing of parallel reference lines. Size Information: This ruler is approximately 45cm long and is well-suited for charting tasks. Product Information Product Name: Parallel Ruler Color: Transparent Material: Acrylic Size: 450mm Packing List: Parallel Ruler x1 Note: 1. Due to extended shipping times, the item may be subject to damage during transit. If damaged, please through the official platform before leaving feedback, and we will assist with resolution. 2. Size may vary by 1-3cm due to manual measurement. 3. Actual color may differ slightly due to monitor display variations.