... featured as cost-efficiency and designed to make accurate measurements on steel, cast iron, aluminum, red copper, zinc, quartz glass, polyethylene ... English System selectable SPECIFICATIONSThickness Measurement Range:0.65 ~400mm(Steel),0.3~200mm(Glass)4~80mm(High temperature), 3~ ... 176g(Including Batteries) Thickness Measurement Range:0.65 ~400mm(Steel),0.3~200mm(Glass)4~80mm(High temperature), 3~50mm ...