... 2, Four digitals LCD display, differentiating upto μm.3, System calibrating by user-self.4, Pocket shell, convenient for ... EC directive: 89/336/EEC2, Digital display:4 digitals.3, Measurement range:0~1200μm.4, Resolution: 1μ ... m .5, Accuracy:±(3%H+2μm).6, Measurement rate:0.5 second ... 12,Power supply:7# alkaline cell , 1.5V*3 .13,Operating environment:Temperature 0—40 °C Humidity:20 ...