Product Name: Granite Square Block Model NO.: NO. 003 Customized: Customized Certification: ISO Precision Measuring Device: Precision Measuring Device Accuracy: A Measure Method: Manual Precision: Grade 0 Resolution: None Range: 1?m-2?m Measurement Object: Outside Diameter Material: Granite Type: V Block Trademark: JINGDA Transport Package: Plywood Case Specification: As per customer's request Origin: China HS Code: 903180 Product Description The main mineral components of granite include pyroxene, plagiooclase, a little olivine,biotite and trace magentite. It is precise in structure with black luster and through hundreds of millions years aging, it is of uniform texture, nice stableness, high intensity and rigidity, and can maintain a high precision under heavy weight. So granite is applicable to the woriks of industrial production and laboratory measurement.Type(mm)Precision grade(um)000000100*100*100121212150*150*15015312153200*200*2002415324300*300*3003615336400*400*400482448500*500*5005102.55510600*600*60061236612800*800*80081648816