Specification :

Application: used for measuring thickness and corrosion of pressure vessels, chemical equipment, boilers, oil storage tanks, etc .in industries of petroleum, shipbuilding, power station, and machine manufacturing.
Model: CM8821
Operating principle: magnetic induction ( F)
Measuring range: 0-1000um
Resolution; 0.1/ 1
Accuracy: + -1-3% n or + -2.5um
Min. measuring area: 6mm
Min. sample thickness: 0.3mm
Battery indicator: low battery indicator
Metric/ imperial: convertible
Power supply: 4x1.5V AA ( UM-3) battery
Auto power off
Operating conditions: 0-+ 45Celsius( 32Fahrenheit-104Fahrenheit) , less than or equal to 90% RH
Dimensions: 160x68x32mm
weight: 250g( not including battery)
Optional accessories: other range 0-200um to 15000um