Keithley Instruments

Keithley Instruments is a measurement and instrument company headquartered in Solon, Ohio, that develops, manufactures, markets, and sells data acquisition products, as well as complete system solutions for high-volume production and assembly testing. In September, 2010, the company agreed to sell itself to the Danaher Corporation, a Washington, D.C.-based conglomerate, for $21.60 per share.