Features 1、Laser Engraved Line: This is micrometer with laser engraved line, which can be read clearly. 2、Slip Resistance Ratchet: This is micrometer with an slip resistance ratchet to prevent slipping. 3、Stainless Steel Material: The micrometer is made of stainless steel, which is hardened and ground to ensure durability and accuracy. 4、Basic Specifications: The micrometer is equipped with a calibration standard and a wrench. The measurement range is 0‑4in, and the measurement accuracy is 0.0001in. 5、Application: This micrometer is widely used to accurately measure length, diameter or thickness. Specification Item Type: Outside Micrometer Material: Stainless Steel Measuring Range: Approx. 0-25mm / 0-0.98in, 25-50mm / 0.98-1.97in, 50-75mm / 1.97-2.95in, 75-100mm / 2.95-3.93in Measurement Accuracy: 0.0001in Use: Measuring the Outer Diameter of High Accuracy Products and Accuracy Parts Package List 4 x Micrometer 3 x Calibration Standard Tool 1 x Wrench 1 x User Manual 1 x Storage Box