Keller is a world leading manufacturer of level and pressure measurement instrumentation. Our state of the art facility is located in Newport News, Virginia and provides sales, manufacturing and support for the North America market. Keller America is a wholly owned subsidiary of Keller AG fur Druckmesstechnik in Winterthur, Switzerland. Founded by Hans W. Keller in 1974, Keller continues to provide innovative pressure measurement technologies to applications around the world.