Heavy Duty Ruler, 20 Inch & 50cm, 0.2" Thick Metal Straight Edge with inch & mm Ruler, for Construction, Office, DIY$$Tools

SOLID HARDENED STEEL: The Heavy Duty Ruler Self Defense is crafted from 5 mm thick, high-strength carbon manganese steel, precision-quenched and reprocessed for maximum toughness and stability during use, and its durability far exceeds that of ordinary steel rulers. DOUBLE SCALE ACCURATE MEASUREMENT: Featuring front and back markings in both inches and centimeters, which are clear and wear-resistant. The heavy duty self defense ruler lets you measure with unmatched accuracy for workshops, construction projects, or DIY tasks. MULTIFUNCTIONAL SAFETY ESSENTIAL: Heavy Duty Ruler is not only a precision measuring tool, but also an emergency striking tool (such as breaking windows)—ideal for vehicle emergencies, home protection, or roadside repairs. Suitable for car safety kits and home tool boxes, it realizes the dual functions of "measurement + emergency EASY TO STORE: This 5 Mm Thick Manganese Steel Hardened Centimeter Inch Dual Scale Measuring Tool Ruler comes with a protective case and can be easily stored in a car glove box, tool bag, or backpack without taking up too much space. Whether you are camping outdoors, driving long distances, or doing home repairs, you can quickly access it. WIDE APPLICATION: This heavy duty ruler features a compact design and durable features, making it a functional and reliable tool for tasks such as measurement and emergency response.