SPX Corporation provides flow technology, test and measurement, thermal equipment and services, and industrial products and services primarily in North America, Germany, and the United Kingdom. It operates through four segments: Flow Technology, Test and Measurement, Thermal Equipment and Services, and Industrial Products and Services. The Flow Technology segment designs, manufactures, and markets products and solutions for processing or transporting fluids, and heat transfer applications and airflow treatment systems. The Test and Measurement segment engineers and manufactures test and measurement products, such as specialty automotive diagnostic service tools, fare collection boxes, portable cable and pipe locators, and vibration testing equipment. The Thermal Equipment and Services segment engineers, manufactures, and services cooling, heating, and ventilation products. It offers dry, wet, and hybrid cooling systems; cooling towers; air-cooled condensers for power generation, refrigeration, heating, ventilation, and air conditioning; and hydronic and heating and ventilation products. This segment also provides thermal components for power and steam generation plants, and engineered services. The Industrial Products and Services segment offers power systems, loading dock products, die castings and filters, precision machine components for the aerospace industry, television broadcast antenna systems, and industrial tools and hydraulic units. SPX serves chemical processing, pharmaceuticals, infrastructure, mineral processing, petrochemical, telecommunications, transportation, automotive, and power generation industries. SPX has a joint venture with Emerson Electric Co. to manufacture electrical fittings, hazardous location lighting, and power conditioning products in the United States, Canada and Mexico. The company was founded in 1911 as The Piston Ring Company. It changed its name to SPX Corporation in 1988. SPX is headquartered in Charlotte, North Carolina.