Measurement ranges:0~1.80mm/0~71.0mil Resolution:0.01mm/1mil Measurment error:0.03mm Min.diameter of substrate:50mm Min.thichness of substrate:0.5mm Power supply:2*1.5V AAA batteries (No included) Operating temperature range 0~40 C Operating humidity range:10~95%RH Overall dimensions:61.98*30.57*104.99cm Weight:63.98g Package content: 1 x GM200 Film Coating Thickness Gauge( No including the retail box or battery ) No including the Metal Calibration Plates