Made of hard steel, it is bright in color, not easy to rust, strong and durable, with small error of probe, adjustable at will and strong applicability. LCD screen, strong scratch resistance, clear data display, intuitive and convenient reading. , the measuring distance is quickly adjusted by the coarse adjusting cylinder, and then the resolution is fine-tuned by the differential cylinder to 0.001MM, which is simple and convenient to operate. Turn left to lock, and turn right to unlock. After the machine is shut down, use the locking device to lock the machine left. Colour:blue+black Material:steel Package Contents: 1 x Electronic micrometer 1 x Small wrench 1 x battery Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.