Features:<br> Accurate Calibration: This external micrometer calibration rod is an essential tool to ensure the accuracy of your caliper measurements.<br> Durable Material: Made of quality metal, this calibration rod is sturdy and long-lasting, providing reliable support for your measuring needs.<br> For Professionals and DIYers: Whether you're a professional machinist or a DIY enthusiast, this calibration rod is perfect for anyone who needs precise measurements for their projects.<br> All-Rounded Usage: Use this calibration rod with calipers to measure a wide range of objects, from small parts to larger components.<br> Simple to Use: Simply attach this calibration rod to your caliper and adjust until the reading matches the marks on the rod. It is easy to use and saves time and frustration.<br> <br> Specifications:<br> Material: Metal<br> Standard: 50mm/25mm/75mm/100mm/125mm/150mm/175mm/200mm/225mm/250mm/275mm (optional)<br> Note: The micrometer 0-25mm does not require a measuring rod. The micrometer 25-50mm uses a 25mm measuring rod, 50-75mm uses a 50mm measuring rod, and 75-100mm uses a 75mm measuring rod.<br> <br> Note:<br> Please allow 1 to 3 cm error due to manual measurement; please ensure you are comfortable with this before purchasing.<br> Due to differences between monitors, the picture may not reflect the actual color of the item.<br> <br> Package includes:<br> 1 x Calibration Rod