Application: Used for measuring thickness and corrosion of pressure vessels,chemical equipment,boilers,oil storage tank Measuring range (metric/imperial): 1.2-200mm,0.06-8inchOperating principle: ULTROSONICMaterials measured: any hard materials, including steel, cast iron, aluminum, red copper, brass, zinc, quartz glass, polyethylene, PVC, gray cast iron, nodular cast iron and other materials ...