Features Premium Stainl Steel Construction: Crafted from high-quality stainl steel, this calibration rod ensures durability and resistance to deformation during use 100% Accurate Measurements: Designed for precision, this rod guarantees reliable calibration for your measuring tools, enhancing the accuracy of your measurements Versatile Measuring Tool: Available in various specifications, this profional caliper calibration block meets diverse needs for different applications Lightweight and Portable Design: With reasonable dimensions, this calibration rod is easy to carry and use, making it ideal for on-the-go profionals Ideal for Micrometer Calibration: Specifically designed for calibrating outside micrometers, this tool enhances the performance and reliability of your measuring devices Features: 1、Made of premium stainl steel, not easy to deform, in use. 2、100% and . 3、A profional measuring tool, various specifications for your choice. 4、Reasonable size and light weight, convenient to use and carry. 5、Mainly used for calibrating micrometers. Specification: Features: Made of premium stainl steel, not easy to deform, in use. 100% and . A profional measuring tool, various specifications for your choice. Reasonable size and light weight, convenient to use and carry. Mainly used for calibrating micrometers. Specification: Material: Stainl steel Purpose: measurement Measuring range: 25mm, 50mm, 75mm, 100mm (Optional) Package List: 1 x Outside Micrometer Package List