When using a pin gauge, first check whether the end surface has burrs, rust and other problems. In addition, try to minimize the temperature difference with the object being measured. To prevent the pin gauge from expanding due to body temperature, it is recommended to wear gloves when useing it. ► Precautions after use After use, clean the pin gauge with a cloth and apply antirust oil. Ensure there are no scratches, then place in box provided. For long-term storage, it should be inspected every half-year, apply antirust oil and stored in a place with small humidity and temperature changes.