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About product and suppliers:
        Alibaba.com offers 2,123 leveling ruler products. About 27% of these are level measuring instruments, 6% are rulers, and 1% are math sets. 

A wide variety of leveling ruler options are available to you, such as metal, plastic. You can also choose from yes, no. As well as from ruler, ballpoint pen. And whether leveling ruler is diesel, or gasoline. 

There are 2,123 leveling ruler suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of leveling ruler respectively. 

Leveling ruler products are most popular in North America, Western Europe, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 513 with ISO9001, 270 with Other, and 32 with OHSAS18001 certification.