This rugged metal detector protects secondary crushers from tramp metal. Constructed of 3/16" thick plate, it is designed to withstand the roughest conditions and is available in widths up to 120". Sophisticated electronics can detect any type of metal, including ferrous, non-ferrous and stainless steel while automatic coil balancing ensures optimum sensitivity. Like all Advanced Detection Systems products, the SurroundScan 9000 is manufactured in Milwaukee, WI from all US made components. Technical service and engineering is also based in the US for prompt response.