Features: Solar powered digital caliper delivers precise measurements (±0.02mm) for diameters, depths, and step with double unit display (mm/inches). Crafted with aluminum and stainless steel jaw, featuring 0.01mm resolution and auto off function for extended use. Ideal for engineers, machinists, and DIYer enthusiasts requiring reliable analysis in workshops or home projects. Perfect for workshop precise tasks, laboratory experiments, and household repairs needing professional accuracy. The waterproof design and ergonomic thumb roller ensures effortlessly operation in demanding industrial environment. Specifications: Component: 4RC13 stainless steel + ABS shell Packaging: Plastic box (net weight of caliper 181g/total weight of 314g) Package Includes: 1 Set Digital Caliper note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.