High Quality Student Supplies Engineering Standard Drawing Sets Stationery
Product description
The ruler should not be mixed with a knife or metal stationery. When mixed with a pen, the pen cover must be put on. The ruler has sharp parts. Pay attention when using it to avoid scratching. Be sure to prevent exposure to the sun and long-term sunshine, and keep away from kindling, so as not to affect the accuracy of the measuring instrument and cause danger. It is better not to clean the ruler with a brush.
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