INSIZE Electronic Indicator Specifications include... 0-.5" / 0-10mm Measuring Range 0.0005" / 0.005 Resolution Features Include... Rotating display head Stem diameter: 3/8" Buttons... inch/mm zero set power on/off mode to find the difference between min. and max. readings +/- for measuring direction change from zero set Data output via USB Auto power off CR2032 battery, includes spare battery Lug back Contact point thread #4-48UNF Supplied in fitted storage case 2 Units at this price