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About product and suppliers:
        Alibaba.com offers 288 pattern making grading ruler products. About 96% of these are rulers, 2% are math sets. 

A wide variety of pattern making grading ruler options are available to you, such as free samples. 

There are 288 pattern making grading ruler suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of pattern making grading ruler respectively. 

Pattern making grading ruler products are most popular in South America, Western Europe, and Eastern Asia. 

You can ensure product safety by selecting from certified suppliers, including 288 with Other, 281 with ISO9001 certification.