Product SpecificationModel: EC771FResolution:1um/0.1milsRange: 0-1250um /0-50milsAccuracy: (3%+2um) / (3%+0.1mils)Mini Curvature: Convex: 5mm; Concave 25mmProduct weight: 68gPower: AAA 1.5V Battery*1Operating temperature: 0C-50CProduct Size: 110mm45mm30mmProduct DetailsPackage: User's Manual, Ferromagnetic substrate, Plastic Shims *4, Carrying Case, Giftbox.Noticed: Battery is not included. Fe type is capable of measuring the thickness of non-magnetic coating ( e.g. paint, procelain, plastic, rubber, or electroplated coating) on magnetic materials (e.g. iron and steel). This unit is ideal for manufacturing company, metal machinery industry, chemical industry, and commodity inspection especially in automobile trading. Auto power off mode designed to conserve battery life, and with lower power alarm Compact design and easy to carry Zero, Multi-point calibration Digital LCD display with FLIP functio