OKK Corp. engages in the manufacture and sale of machine tools, textile machinery, and water meters. It operates through the following segments: Machine Tools, Water Meter, and Others. The Machine Tools segment deals with machining centers and milling machines. The Water Meter segment includes telemetry reading and water distribution measurement systems, water meter models, and handy terminals. The Others segment is involved in the textile machinery and hardware businesses. The company was founded on October 20, 1915 and is headquartered in Itami, Japan.