- Quick and accurate baseline: Clean the measuring surface before use and correct the zero position. The device supports direct zero alignment from 0 to 25 mm, with 25 mm positioned at the top, ensuring fast, repeatable starting points. - Easy zero correction: If the 0-line does not align with the baseline, loosen the first screw with a screwdriver and use a wrench to adjust the baseline line until the 0 alignment is correct, then tighten the screws. See the usage instructions in image 2. - Accurate measuring technique: When measuring, keep the micrometer perpendicular to the workpiece. As you apply contact, rotate the spindle gently; when the force gauge yields a slight click, the reading reflects the actual size of the workpiece. - Reliable locking mechanism: The lock enables stable, back-and-forth micro screw positioning. To use, loosen to the right and lock to the left. See usage instructions in figure 3. - Practical applications: Ideal for precise small-part checks in metalworking, quality control in manufacturing, and routine instrument calibration where 0-25 mm measurements and repeatable zeroing are required.