Material and construction: The ruler body is made from quality aluminum alloy and is laserprocessed for precision. It is integrally formed, eliminating joints that can loosen over time, and is rustresistant and deformationresistant. Corner base and versatility: The corner base is also made of aluminum alloy, designed to support mobile, multidirectional measurement and provide a stable reference in tight or awkward spaces. Durability and build: The ruler has a thick aluminum alloy body that is sturdy and resistant to drops and wear, suitable for regular use in demanding environments. Key benefits: Provides accurate measurements with a rigid, allmetal construction; durable in workshops and field environments; low maintenance with corrosion resistance; integrated design reduces misalignment and wear. Use scenarios: 1) Metalworking and fabrication: use for layout checks and marking reference lines on parts where space is limited. 2) Woodworking and cabinetry: leverage the corner base for quick, multidirection measurements around edges and inside corners. 3) Field design and inspection: carry to job sites for onsite measurement checks and layout verification with reliable performance. Maintenance tips: Wipe with a dry cloth to remove dust; avoid exposing to extreme impacts to preserve the integrally formed structure.