WHITE PLAINS, N.Y. (April 27)—ITT Industries has signed an agreement to purchase Watertown, Mass.-based C&K Components Inc. for an undisclosed amount. The purchase makes ITT´s Cannon Division the world´s largest rubber switch manufacturer. ITT has targeted its smallest unit, the connector and switch division, for growth because of increased demand for the products. Last fall the division purchased Singapore´s STX Pte. Ltd. for $118.8 million, making it the world´s largest producer of keypads used in telecommunications equipment.