used astro vertical milling machine with inverter frequency drive motor GS15F-1 used astro vertical milling machine with inverter frequency drive motor GS15F-1 used astro vertical milling machine with inverter frequency drive motor GS15F-1 used astro vertical milling machine with inverter frequency drive motor GS15F-1 used astro vertical milling machine with inverter frequency drive motor GS15F-1 used astro vertical milling machine with inverter frequency drive motor GS15F-1 used astro vertical milling machine with inverter frequency drive motor GS15F-1 used astro vertical milling machine with inverter frequency drive motor GS15F-1 used astro vertical milling machine with inverter frequency drive motor GS15F-1