The instrument should be calibrated to ensure accuracy. Equipped with battery power indicator, 3 minutes no-operation automatic shutoff, and backlight on/off function. With statistical display showing average, minimum, maximum and count, supporting up to 50 data points; latest data replaces oldest when reaching 50, updating statistical values automatically. Comes with aluminum sheet and 6 calibration films (0.05mm, 0.25mm, 0.10mm, 0.50mm, 1.00mm, 2.00mm). Used for non-destructive measurement of coating and paint thickness, suitable for non-conductive coatings on metal surfaces and non-ferromagnetic coatings on ferromagnetic metals (e.g., automobile surface paint, metal parts coating). Widely applicable in manufacturing, metal processing, commercial inspection, laboratories and workshops. Material: ABS; Color: as shown in the picture; Display: LCD backlight; Battery: 2*1.5V AAA (not included); Measurement range: 0-2000UM; Accuracy: (3%+1UM); Operating temperature: -10 to 50℃; Item size: 85*40*30mm; Package includes 1 Thickness Gauge, 6 Calibration Films, 1 Base Sheet, 1 Manual.