Feature: 1. The NSDH-101 calibrating machine is used in defining thickness of granite and marble. 2. One head combination to improve polishing quality and quantity. 3. High speed grinding discs work seperately to ensure the uniform of slabs. 4. Grinding feed easily adjustable. 5. Solid roller base, low vibration and distortion. Technical Parameters: NameUnitNSDH-101Diameter of grinding headsmm680, 880, 1180, 1300Max Vertical strokemm100Main drive powerkw15/18.5Water consumptionL/min120Weightkg≈3200