Mitutoyo's Thickness Gage offers a quick and efficient means of inspection with their convenient grip handle, thumb trigger and spring-loaded spindle. Features Include... 0-.47" / 12mm Measuring Range 0.0005" / 0.01mm Resolution + 0.001" Accuracy ON/OFF Inch/mm Conversion Origin Direction Changeover SPC Output Battery Life:20,000 hrs Power Supply: Silver Oxide Cell (SR-44 1pc.)