Features: ?? Versatile and Convenient: Our foldable dual-scale ruler comes equipped with a laser locator that projects a helpful guideline onto any surface. With the added benefit of a ruler scale, it's perfect for measuring irregular objects, writing, and even drawing. ?? Durable and Reliable: Made from high-quality aluminum alloy and engineering plastic, this ruler is built to last. It's tough enough to withstand daily use and is sure to be a reliable tool in your toolbox for years to come. ?? Long-lasting Power: Powered by three LR44 button batteries, the laser locator can work continuously for up to four hours. This means you can use it for extended periods without worrying about running out of power. ?? Flexible and Adjustable: The ruler can be rotated 180 degrees, making it easy to use in any position. Additionally, the measuring scale can be extended up to 680mm, providing even more flexibility and versatility. ?? Perfect for a Variety of Applications: Whether you're measuring the distance between photos on a wall, writing on a lined paper, or measuring the length and width of an irregular object, this ruler is the perfect tool for the job. It's a must-have for anyone who needs accurate measurements and precise positioning. Specification: Model: 9Z1CL Material: Aluminum Alloy, Plastic Weight: 258g Power Supply: 3*LR44 each laser head Discharge: About 4hrs Folded Size: 362x113x28mm Unfold Size: 698x71x28mm Folded Scale: 330mm Unfold Scale: 680mm Package Size: 45x13.5x3cm/17.7x5.3x1.1in Package Weight: 320g/11.2oz Packing List: 1 x Ruler