Features Premium Aluminum Alloy Construction: Crafted from high-quality aluminum alloy, this ruler ensures durability and resistance to wear and tear, providing a reliable tool for precision woodworking projects Double 45° Measurement Design: The unique double 45° angle design allows for accurate and efficient marking, making it an essential tool for carpenters and DIY enthusiasts alike Clear, Easy-to-Read Scale: Features laser-engraved markings that are easy to read, ensuring precise measurements and reducing the risk of errors during your projects Compact and Portable: Lightweight and easy to carry, this woodworking ruler is designed for convenience, allowing you to take it anywhere you need for on-the-go measuring Versatile Application: Ideal for various woodworking tasks, including furniture making and layout work, this ruler is perfect for both professional carpenters and hobbyists, enhancing your crafting experience Features: 1、Standard: The scale is clear and scratch , in line with international standards, high accuracy measurement and accurate spacing, practical and beautiful. 2、3 Sizes: This engineering ruler has 3 sizes of 15cm, 20cm, and 25cm, suitable for enthusiasts who love computers, electronics, and electricians. 3、Metric And Inch Measurement: The ruler includes basic functions such as measuring metric and inch sizes, drawing lines, and measuring angles. 4、Multi Function: It also integrates the commonly unit SMD components standard package, line width size reference, drilling size reference used in drawing PCB. 5、 Material: Fine workmanship, the ruler is made of gold plated PCB material, high hardn, good wear resistance, and . Specification: Item Type: Engineering Ruler Material: PCB Product Specification: Approx. 15cm/5.9in, 20cm/7.8in, 25cm/9.8in Color: Black Gold Plated Range: Metric: Approx. 15cm/5.9in, 20cm/7.8in, 25cm/9.8in Inch: Approx. 6in, 7in, 8in Commonly Used Line Width Size Reference: 8mil, 10mil, 15mil, 20mil, 25mil, 30mil, 40mil Common Drilling Reference Size: Approx. 1.0mm/0.04in, 1.5mm/0.06in, 2.0mm/0.08in, 2.5mm/0.10in, 2.5mm/0.10in, 3.0mm/0.12in Package List: 3 x Engineering Ruler Note: Manual measurement, please allow some errors. Package List 3 x Engineering Ruler