Tektronix, Inc. "Tek" is an American company best known for manufacturing test and measurement devices such as oscilloscopes, logic analyzers, and video and mobile test protocol equipment. Originally an independent company, it is now a subsidiary of Fortive, a spinoff from Danaher Corporation. Several charities are or were associated with Tektronix, including the Tektronix Foundation and the M.J. Murdock Charitable Trust in Vancouver, Washington. The company traces its roots to the electronics revolution that immediately followed World War II. The company’s founders C. Howard Vollum and Melvin J. "Jack" Murdock invented the world’s first triggered oscilloscope in 1946, a significant technological breakthrough. This oscilloscope touted by Tektronix was the model 511. The model 511 was a triggering with sweep oscilloscope. The first oscilloscope with a true time-base was the Tektronix Model 513. The leading oscilloscope manufacturer at the time was DuMont Laboratories. DuMont pioneered the frequency-synch trigger and sweep. Allen DuMont personally tried the 511 at an electronics show and was impressed, but when he saw the price of $795, which was about twice as much as his equivalent model, he told Howard Vollum at the show that they would have a hard time to sell many. Tektronix was incorporated in 1946 with its headquarters at SE Foster Road and SE 59th Avenue in Portland, Oregon. In 1947 there were 12 employees, and 250 in 1951. By 1950 the company began building a manufacturing facility in Washington County, Oregon, at Barnes Road and the Sunset Highway, and expanded the facility by 1956 to 80,000 square feet (7,000 m2). The company then moved its headquarters to this site, following an employee vote. A detailed story of Howard Vollum and Jack Murdock along with the products that made Tektronix a leading maker of oscilloscopes can be found at the Museum of Vintage Tektronix Equipment.