DKK-TOA Corp. engages in the manufacture and sale of analytical and measuring instruments. It operates through the Measurement Tools and Real Estate Leasing segments. The Measurement Tools segment handles the manufacture and sale of environmental and process analysis equipment, scientific analysis equipment, and industrial gas detection alarms. The Real Estate Leasing segment deals with the leasing of buildings. The company was founded on September 19, 1944 and is headquartered in Tokyo, Japan.