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Precision Square
This granite square ruler is mainly used to test the verticality or degree of parallelism. It is manufactured in accordance with the standard of GB6092-85. We can customize precision granite square rulers of special or large sizes. Parameters We also could manufacture other size
Granite Precision Square

This kind of granite square ruler is manufactured in accordance with the standard of GB6092-85 which is mainly used to test the degree of verticality or parallelism
Customize precision granite square rulers of special or large sizes are available.


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