Ocma200 Lens Assembly Measuring Tool for Accurate Central Deviation Measurement. Granite and Marble Construction: Base made of granite with marble X and Z axes for minimal thermal deformation. Air-Float Vibration Damping: Equipped with air-float mechanism to isolate external vibrations for high accuracy. UK Renishaw Linear Scales: Features imported Renishaw scales with 20-50 nanometer resolution for ultra-high precision. Fully Enclosed Guideways: All three axes have enclosed guideways to prevent dust and oil erosion. Precision Temperature Compensation: Real-time error compensation using imported Renishaw sensors and dedicated controllers. Four-Sided Air Bearings: Adopts four-sided enclosed air bearing structure for uniform suspension and stability. One Year Warranty: Comes with a standard one-year warranty covering mechanical defects. OEM and ODM Services: Supports full customization from designs with available OEM and ODM services.