COATING THICKNESS METER Measuring Range:0~1.80mm/0~71.0mil Accuracy:±0.03mm Resolution:0.01mm/1mil Min.Diameter Of Subdtrate:50mm Min.Thickness Of Substrate:0.5mm Operating Temperature Range:0~40°C Operating Temperature Range:10-95rh Power Supply:2*1.5v Aaa Overall Dimensions:65*31*108mm Weight:63.98g(Exclusive Of Batteries)