... and rotary encoderadvantage:1,the high precision digital readout is specialization design,elegant appearance ,high speed of numeation,multy ... wear-resisiting,good shield.3,independent power,widely used,high stabilization,capacity of resisting disturbance well4, the power source ... role .6,automatic tool compensation for both X and YSuitable specification and type of the lathe Milling machine NO 2 700 ...