Product Features: High Precision: The aluminum positioning ruler provides precise measurements, ensuring more accurate and professional woodworking results. Premium Quality: Crafted from 4.5mm thick aluminum alloy, this ruler boasts superior durability and a long service life. Secure Usage: The spiral buckle feature guarantees firm positioning, preventing slipping and allowing for more accurate line drawing. Versatility: Available in multiple sizes, this ruler caters to various project needs, making it an essential tool for any woodworker. Imperial and Metric Scale: Featuring both imperial and metric scales, this ruler is ideal for a wide range of woodworking tasks. Specifications: Material: Aluminum Alloy Thickness: 4.5mm Scale: Imperial and Metric Available Sizes: 200mm, 300mm, 400mm, 500mm, 600mm Package Includes: 1 x Aluminum Positioning Ruler (Choose the size according to your requirements)