machine machine tool machining center machining cycle magnet magnetothermic main spindle maintenance mallet maltese cross mandrel mandrel manual mode material maul measure measuring measuring probe mecanization mechanical drive mechanical drive mechanician mechanism mechanize metal meter metering metre metric thread metrology micro micro-switches box micrometer micron mill mill mill holder millimeter millimetre milling milling machine mode modular assembly monitor monkey wrench monophasic motion motor mount movement multiangular multiple-spindle head