Vernier calipers with dual scale for metric and imperial measurements Range and resolution: 0 to 80 mm and 0 to 3.15 inches with a 0.1 mm resolution, enabling precise measurements in both metric and imperial units. Readability and durability: Lightweight construction with clear, wear resistant markings for durable, easytoread measurements during repeated classroom or workshop use. Target users and task fit: Ideal for students, hobbyists, and enthusiasts who need a stable dimensional measurement tool for educational projects or home improvement tasks. Practical environments: Suitable for school labs, craft stations, and engineering workshops where easy carry and a user friendly measuring instrument are essential. Use scenarios: In classroom labs for measuring parts and verifying tolerances during experiments. In home workshops for assembling projects, fitting components, or checking material thickness. In hobbyist activities such as model building, woodworking, or electronics enclosures where precise measurements are needed.