Features: Achieve unparalleled precisions in your woodworking projects with our Woodworking Slide Ruler, featuring a aluminum construction for durability and accuracy. This ruler boasts a thickened aluminum base, resist wear, and multiple size option for use. Ideal for professional craftsmen, students, and DIY enthusiasts, this tool enhances precisions in various tasks, from intricate woodworking to educational projects. Perfect for workshops, classrooms, and home improvement projects, it provide reliable measurements and marking, ensuring high quality result. With its ergonomic design and corrosion resistant finish, this ruler is not only a practical measuring tool but also long addition to any toolkit. Specifications: Material: Aluminum Size: 20cm: About. 23.5x2.3x0.4cm/9.25x0.91x0.16in 30cm: About. 33.5x2.3x0.4cm/13.19x0.91x0.16in 40cm: About. 43x2.3x0.4cm/16.93x0.91x0.16in Measurement Ranges: 20cm/30cm/40cm Package Includes: 1pc Slide Stop Ruler note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.