Circuit Check is an American company with about 225 employees and seven direct operations in six countries (the U.S., Canada, Mexico, United Kingdom, China, and Malaysia). Headquartered in Maple Grove, Minnesota, it is one of the largest manufacturers of electronic and mechanical test fixtures in North America,. The company also manufactures Automatic Test Equipment for end-of-line manufacturing test. The company uses either a Microsoft Excel-driven "CCITest" software platform, or the National Instruments LabVIEW software platform.