Millimeter level accuracy with a elite acrylic mini ruler This mini ruler delivers millimeter level measurements with an error margin under 1 mm, designed for precise household measurements. Magnetic base for secure attachment A strong magnet at the bottom allows secure attachment to metal surfaces, enabling hands measurement and improving workflow efficiency. Versatile threebubble leveling Equipped with three bubble vials for 45degree, horizontal, and vertical leveling, making it suitable for a wide range of tasks and settings. Impurityresistant leveling bubble The leveling bubble is designed to resist impurities, ensuring easy readability and reliable leveling results. Compact, durable design Made from durable elite acrylic, the compact ruler is easy to handle and suitable for tight spaces while withstanding daily use. 23 practical use scenarios Mounting shelves or hanging pictures on metal surfaces such as steel cabinets or metal studs, ensuring accurate alignment without repositioning. Leveling tile, countertops, cabinets, or appliances during kitchen or bathroom renovations, using horizontal and vertical bubbles for precise setup. Small DIY projects or furniture assembly that require precise measurements and level readings in tight spots, such as framing, mounting hardware, or crafting projects.