Features Alloy surface: the cemented alloy measuring surface ensures the durable stability of the ruler. Rest assured that you can use it! Mechanical Structure The precise mechanical structure makes reading more intuitive and convenient. And the built-in force limiting device ensures accurate and repeated reading. Wide Application This micrometer is widely used for measuring various external sizes and shape tolerances. And it is quickly ready to use. PRECISE MEASUREMENT Efficient one-handed measurement ensures the accuracy of real-time measurement data. You can choose the ruler with confidence! Easy to carry: due to its small size and light weight, you can easily take this ruler with you to help you with your work. Specification: Item Type:Micrometer Measuring accuracy: 0.01 mm. Measurement surface material: aluminium alloy. Package list: 1 x micrometer. 1 x storage box. 1 x wrench. 1 x user manual (English language or 1 x micrometer. 1 x storage box. 1 x wrench. 1 x accessory. Note: 1. Do not disassemble the micrometer as desired. 2. Wipe the box clean after use to keep the micrometer clean. Package List 1 x Micrometer 1 x Storage Box 1 x Wrench 1 x Accessory