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About product and suppliers:
        Alibaba.com offers 804 optical ruler products. About 19% of these are other optics instruments, 6% are rulers, and 1% are other measuring & gauging tools. 

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

There are 804 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 Eastern Asia. 

You can ensure product safety by selecting from certified suppliers, including 565 with Other, 215 with ISO9001, and 54 with ISO13485 certification.