Supply of Digital Outside Micrometer, Range 500-60 Digital Outside Micrometer, Range 500- 600Mm, Resolution: 0.001 Mm, Accuracy: +/-12 Micrometer, Interchangeable Anvils, Flat Shape Of Spindle, Spindle End Tipped With Tungsten Carbide, Battery Sr44 Approx. 1.8 Year Life Under Normal Use, With Proper Casing Along With Nabl Calibration Certificate..