Ideal for marine navigation and drafting, this ruler offers exceptional precision for plotting courses and creating detailed designs. Its user-friendly design ensures smooth operation, while the durable acrylic material withstands wear and tear. This tool is suitable for professionals and enthusiasts aiming for accuracy and efficiency in their work. Features - Color: Transparent -Material:Acrylic, stainless steel - Size: 60.00X7.50X0.50cm/23.58X2.95X0.20in -Precision charting: ensures accurate measurements for reliable nautical chart plotting, enhancing voyage safety -Simple pull design: easy to use, parallel ruler is suitable for confined and challenging environments -Sturdy build: withstands harsh marine conditions, offering durability and reducing replacement needs -Steady measurement: parallel ruler structure maintains consistent angles, improving drawing precision -Ideal for professionals: suitable for ocean navigation, marine engineering, and marine research, essential for Package list: 5 x parallel ruler