Precision Measurement: Accuracy of 0.00005/0.001 mm, GRENPRO precision micrometers for accurate measurement of precision instruments with a measuring range of 0-25mm/0-1 Metric Inch: Calipers can be switched between metric and imperial units, providing convenience during use High-Quality Materials: the use of high-quality metal and abs, to ensure long-term use, very reliable LCD Large Screen: LCD large display, easy for engineers to read in the use of the process, to avoid errors caused by display problems Locking Device: This electronic micrometer, with a locking device, can be rotated after the measurement is completed locking device, will not produce error!