digital readout meter 1, power off Memory 2multi-role catalogue 3,liner error compensation 4,axis:1,2,3 digital readout and scale1 ... of linear scale and rotary encoderadvantage:1,the high precision digital readout is specialization design,elegant appearance ,high speed of ... resisting disturbance,durable keyboard,easy to change5,the catalogue is multi-role .6,automatic tool compensation for both X and ...