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About product and suppliers:
        Alibaba.com offers 868 optical ruler products. About 21% of these are other optics instruments, 20% are magnifiers, and 11% are sensors. 

A wide variety of optical ruler options are available to you, such as plastic, metal, and wood. You can also choose from yes, no. As well as from straight ruler, triangular ruler. And whether optical ruler is free samples, or paid samples. 

There are 868 optical ruler suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of optical ruler respectively. 

Optical ruler products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 588 with Other, 210 with ISO9001, and 60 with ISO13485 certification.