The Alpha-660 is a dual-disc manual-automatic grinder and polisher designed for precision sample preparation. It features independent motor drives for the head and polishing discs, supporting disc diameters from 200mm to 300mm. The machine offers two pressure modes: central and individual loading. An optional peristaltic pump system with up to four channels is available for precise dispensing of polishing solutions. The system allows for the programming and storage of up to 20 commonly used grinding and polishing procedures, ensuring consistent and reproducible results with ease and efficiency.