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Granite Triangle Ruler
The Granite Triangle Ruler is a kind of precision measuring tool made of natural granite....
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Stone Made Precision Straight Ruler
Granite has gone through long-term natural aging,with a uniform organizational structure,a very small linear expansion coefficient,and the internal stress has completely disappeared,so it hardly deforms,which can ensure high-precision measurement....
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Precision Granite Straight Ruler
Common Specifications: The length of precision granite straight rulers usually ranges from 100mm to 2000mm, and the cross - section is generally rectangular. ...
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