Granite Square Rulers
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The marble square rule is used for the detection of verticality and parallelism.
The marble square rule is mainly made of the minerals such as Taoshi stone, plagioclase, olivine in small quantity, biotite and magnetite in trace quantity. The marble square rule has uniform texture, high stability, high strength and high hardness and can keep high precision under heavy load.
The marble square rule is mainly applied to measurement of industrial production and labs.
Plane Precision Standard: GB6092-85
Verticality Standard: GB6092-85
|Specification(mm)||Two Adjacent Measuring Faces Verticality||Measuring Face Linearity||Opposite Measuring Faces Parallelism|
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