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How to maintain the aluminum shell

November 8, 2022

1. When there is burr on the workpiece surface, the burr must be removed before measurement, otherwise the measuring tool will be worn and the accuracy of measurement results will be affected.

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2. Do not use oilstone and emery cloth to rub the measuring tool surface, measuring surface and scribed line. It is forbidden for non measuring maintenance personnel to disassemble, refit and repair the measuring tool without authorization.

3. It is not allowed to use the measuring claw tip of the caliper as a scribe, compass or other tool, and it is not allowed to manually twist two claws or use the measuring tool as a clamp.

4. Do not touch the measuring surface of the measuring tool with your hand, because sweat and other damp dirt on your hand will pollute the measuring surface and make it rust. The measuring tool shall not be mixed with other tools and metal substances to avoid damaging the measuring tool.

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5. The storage place of measuring tools shall be clean, dry, free from vibration and corrosive gas, and far away from places with large temperature variation range or magnetic field. The measuring tools stored in the measuring box shall be clean and dry, and no other sundries shall be stored.

6. After using the measuring tool, wipe off the surface stains and aluminum chips, loosen the fastening device, and coat the measuring surface with antirust oil when it is not used for a long time (more than 1 month). When the measuring tools are not in use, they should be put into the protection box. It is better to assign special personnel for full-time use, and make the annual audit record of the measuring tools tested by the authoritative unit.