Spiral Segmented Calibration Roller is a precision diamond calibration tool used for accurate thickness leveling and surface preparation of granite, marble, and other natural stone slabs. It is manufactured with high-quality diamond segments arranged in a spiral pattern, which ensures continuous contact with the stone surface for smooth, efficient, and uniform calibration.The spiral segment design helps in reducing vibration, improving cooling, and enhancing material removal efficiency. This results in consistent slab thickness, improved surface quality, and better preparation for the polishing process. These rollers are widely used in automatic calibration and polishing lines in modern stone processing plants.