... red copper, zinc, quartz glass, polyethylene, PVC, gray cast iron and nodular cast iron. Thickness measurements are made from one side of the material ... 3~200mm(Glass)4~80mm(High temperature), 3~50mm(Gray Iron)Notes: Thickness range depends on material transducer type, surface ... 3~200mm(Glass)4~80mm(High temperature), 3~50mm(Gray Iron)Notes: Thickness range depends on material transducer type, surface ...