How to Use a Micrometer?

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Here is how to use a micrometer: 1. Clean the surface of the workpiece to be measured and place it between the two anvils of the micrometer. Ensure the micrometer's spindle axis is perpendicular or parallel to the workpiece's centerline. Measuring at an angle will directly affect the accuracy of the measurement. 2. Rotate the thimble to bring the anvil close to the workpiece's measurement surface. Then switch to rotating the ratchet until it makes a "click" sound. The indicated value at this point is the measured size of the workpiece. 3. After measurement is complete, lower the thimble and remove the micrometer. 4. After use, clean the micrometer thoroughly, keep it dry, apply a thin layer of industrial vaseline, and store it in its case. 5. Avoid heavy pressure or bending the micrometer, and ensure the two anvils do not come into contact to prevent affecting the micrometer's precision.