Granite Measuring Instruments

• Granite Calibration Straight Edge

  Applications
  CNC Machine Bed and Rail Alignment
  Surface Plate Calibration
  CMM & Metrology Laboratory Measurement
  Mold Tooling Inspection
  Aerospace, Automotive, and...

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• Granite Straight Edge

  Attribute Detail
  Product Color：Pure Black / Black Grey
  Precision：Better than 1μm (Nano Lapping Technology)
  Warranty：1 Year
  Test Report：Provided
  Material Analysis...

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• Granite Measuring Straight Edge Grade 00

  Material: Natural Black Granite from China, India, or South Africa
  Density: ≈3070 kg/m³
  Precision: 1 μm or higher (Grade 00 & 0)
  Color: Pure Black
  Standard Compliance: DIN,...

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• CNC Machine Alignment Granite Straight Edge

  Material: High-density black granite (natural stone, non-magnetic, rust-proof)
  Precision Grade: Grade 00 & Grade 0 (according to GB/T or DIN standard)
  Accuracy Surfaces: Four precision...

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• High Precision CNC Mold Granite Straight Edge

  Available Specifications
  Length Range: 300 mm to 3000 mm
  Cross-section: Rectangular, T-type, or customer-defined
  Accuracy Grade: 00 / 0 / Custom
  Working Surfaces: 2-surface...

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• Granite Straight Edge for Machine Calibration

  Specifications:
  Material: Jinan Black Granite
  Flatness Tolerance: Up to 0.001mm
  Length Range: 300mm – 3000mm
  Precision Grades: 0, 00, or Custom
  Surfaces: 2-side or...

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• Granite Straight Edge With High Precision 0.001mm

  Material: granite
  Executive Standard: DIN, ASME, JJS, GB, Federal...
  Min. Order Quantity: 1 Piece
  Supply Ability: 100,000 Pieces per Month
  Payment ltem:EXW, FOB, CIF, CPT,...

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• Precision Granite Straight Edge for CNC and Metrology

  Material: granite
  Executive Standard: DIN, ASME, JJS, GB, Federal...
  Min. Order Quantity: 1 Piece
  Supply Ability: 100,000 Pieces per Month
  Surface treatment: ground...

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• 00 Class High Precision Granite Straight Edge

  Parameter description:
  Accuracy level: 00 grade
  Material: natural granite
  Density: 3.07g/cm3
  Compressive strength: 276MPa
  Thermal expansion coefficient:...

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• Granite Measuring Square Ruler

  ✅ The accuracy level can reach 00, suitable for CNC/mold diagonal detection ✅ Natural black granite, stable and non-deformed, corrosion-resistant and wear-resistant ✅ Each piece comes with a...

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• Granite Tri-Squares

  Crafted from high-density granite, these tri-squares boast 6-7 Mohs hardness, resisting wear and corrosion far better than metal tools. Their two edges and large face are ground to ultra-flat,...

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• Granite Engineering Square

  Made from premium black granite, this triangular granite square is engineered for exceptional accuracy in 3D axis calibration. Ideal for CNC machining centers, milling machines, and coordinate...

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