Metallographic grinder machines offer an economical solution to your metallographic sample preparation needs. METPOL series of instruments are available in 8" (200mm) / 10" (250mm) / 12" (300mm) wheel sizes and come with both single or double wheel versions with variable rotating wheel speed of 50-600 RPM. Detachable water sprayer for easy cleaning. A feather touch digital control panel as well as a fully molded FRP body with easy disc change design.