Precision Measurement Accuracy of 0.000050.001 mm, GRENPRO precision micrometers for accurate measurement of precision instruments with a measuring range of 025mm01 Metric Inch Calipers can be switched between metric and imperial units, providing convenience during use HighQuality Materials the use of highquality metal and abs, to ensure longterm 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