Features: High Precision: The aluminum positioning ruler ensures high-precision measurements for your woodworking needs, aiding in more accurate and professional outcomes. Premium Quality: Made from 4.5mm thick aluminum alloy, this ruler ensures durability and a long service life. Secure Usage: Equipped with a spiral buckle, this ruler guarantees firm positioning and avoids slipping, enabling you to draw lines more accurately. Versatility: With multiple size options available, you can select the one that best suits your needs, making it a versatile tool for various projects. Imperial and Metric Scale: This ruler features both imperial and metric scales, making it a practical tool 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)