NavigationCMM supportCMM knowledgebaseLegacy productsSFP1 legacy probeSurface finish probe installation and user's guide - legacyMaintenanceOptical windows maintenanceRack port maintenanceSFA maintenanceNavigationCMM supportCMM knowledgebaseLegacy productsSFP1 legacy probeSurface finish probe installation and user's guide - legacyMaintenanceOptical windows maintenanceRack port maintenanceSFA maintenanceSFA maintenancePeriodically visually inspect the SFA for scratches.