For the professional bodyshop or valeting bay to accurately verify the thickness of paint and check for accident damage. Uses magnetic induction to provide accurate and consistent readings to 1µm. Gauge can tell you if metal putty has been used to repair bodywork damage. Suitable for steel and aluminium panels. Easy to calibrate with test plates and precision standards. Stores up to 10 groups of 8 recordings while providing averages and min max information. 320mAH 3.7V Lithium-ion battery provides 1 month of standby time. Supplied with seven calibration panels, iron and aluminium calibration panel and USB to USB-C charging cable.