Description :  RM660 0-1.25mm Digital Paint Coating Thickness Gauge Meter Iron Aluminum Base Metal Car Automotive Measure    Features :      Digital LCD display.   Data HOLD function.   Zero calibration.   Comes with iron base and non-iron (aluminunm) base.   Portable， user friendly and easy to carry even in pocket.   Low battery indication.   Auto shut-off if no operation in 1 minute.    Specification :  <br> Target Measure: Non-metal coating thickness on the metal surface<br> Measuring Range: 0~1.25mm nonmetal coating on metal surface<br> Precision Measurement: 2% RDG 0.02mm [2% RDG &amp;plusmn;1mil (steel and aluminum only)]<br> Power Supply: 1 x 3V CR2032 button battery (not included  button battery)<br> Working Current: &amp;lt;10mA<br> Auto Power off time: No actions in 1 min if leave the measured object<br> Minimum base diameter: 10mm<br> Critical base thickness: 0.5mm<br> Display resolution: 0.02mm\/1mil<br> Operating Temperature: -5~40\u2103<br> Operating  Humidity: 5~95%RH non condensing<br> Storage Temperature: -20~60\u2103<br> Storage Humidity: &amp;lt;85%RH (without battery)<br>  <br> Package includes :  <br> 1 x Digital Meter Instrument Tester<br>  <br> Details pictures :