Over the years Cameron acquired Ingram Cactus, Tundra and McEvoy companies which has grown Cameron's aftermarket knowledge and market share in the wellhead industry. Valves & Measurement manufactures flow control equipment and provides aftermarket services for worldwide onshore, offshore and subsea oil & gas production, pipeline and process operations. Measurement Systems designs, manufactures and distributes measurement, quality, and control instrumentation for the global oil & gas and process control industries.