For current aluminum materials, many aluminum materials, to understand what is necessary to understand this process, to understand the relevant characteristics, in the production of aluminum profiles, measuring tools are like weapons in the hands of inspectors. If the weapon is in a semi-paralyzed or damaged state, the inspection result is meaningless, and the quality of the product cannot be monitored and controlled. Therefore, the maintenance and care of measuring tools is very important. The following are some maintenance specifications for measuring tools.

1. The storage place of measuring tools should be kept clean, dry, free from vibration and corrosive gas, and should be far away from places with large temperature changes or places with magnetic fields. The measuring tools stored in the measuring tool box should be clean and dry, and other sundries are not allowed to be stored.

2. After using the measuring tool, wipe clean the surface stains and aluminum chips, loosen the fastening device, and when not in use for a long time, apply anti-rust oil on the measuring surface. When the measuring tool is not in use, it should be put in the protective box, and it is best to be used by a dedicated person, and the annual review record of the measuring tool tested by an authoritative unit should be prepared.

3. Do not use oilstone, emery cloth to rub the surface of the measuring tool, the measuring surface and the engraved part, and it is strictly forbidden to disassemble, modify and repair the measuring tool without authorization.

4. When there are burrs on the surface of the workpiece, be sure to remove the burrs before measuring, otherwise the measuring tool will be worn out and the accuracy of the measurement results will also be affected.

5. Do not touch the measuring surface of the measuring tool with your hands, because wet dirt such as sweat on your hands will contaminate the measuring surface and make it rusty. Do not mix the measuring tool with other tools and metal materials to avoid damage to the measuring tool.

6. It is not allowed to use the tip of the measuring claw of the caliper as a needle, compass or other tool, and it is not allowed to twist the two jaws or use the measuring tool as a chuck.