Hewlett-Packard Co. has named Edward W. Barnholt as executive vice president and general manager of its newly created test and measurement organization. Wilfred C. Kittler Jr. has joined NeoVac as technical director. Kittler has held technical and management positions with several coating manufacturers. Humphrey Systems, a division of Carl Zeiss Inc., has named Lothar Koob as president. Koob replaces John Moore, who served as president for six years. Sterlite Optical Fibre has appointed Mansoor Saifi to lead its optical fiber manufacturing unit in India. Richard A. Hassler has been appointed manager of engineering services and Michael A. Gauvin assumes the position of vice president of sales and marketing for Lambda Research Corp. Litton Industries has named David C. Miller president of its Airtron Div. He replaces Robert Lagno, who becomes director of business development for Litton's Electronic Components and Materials Group. Tec5 GmbH has appointed Gert Noll as product manager. Noll previously held a similar position at Carl Zeiss Jena in the spectral sensors field. Bo Gu has joined laser micromachining company Resonetics Inc. as director of marketing. Gu spent eight years at Lumonics Corp. DiCon Fiberoptics Inc. has appointed Roe Hemenway as director of advanced technologies. Previously, Hemenway was a senior member of MIT Lincoln Laboratories' technical staff. Lucent Technologies has appointed William John Allard as vice president of marketing for the global service provider business group in the Asia/Pacific region. Gerald Rudinsky has joined Wakefield Engineering Inc. as vice president of operations. He will oversee the worldwide operations of Wakefield's line of thermal management products. Displaytech Inc. has expanded its manufacturing facility in Longmont, Colo., by 18,000 sq ft. The Microscopy Business Group of Carl Zeiss Jena has enlarged its facilities in Göttingen and Jena, Germany. E-Tek Dynamics Inc. has expanded its operations into a newly renovated 150,000-sq-ft office building. The company may add 85,000 sq ft. S.i.Tech has moved to Batavia, Ill. Resonetics Inc. has expanded its facility in Nashua, N.H., with a 2000-sq-ft environment-controlled manufacturing cleanroom. Lockheed Martin is constructing a multimillion-dollar, 10,000-sq-ft center for advanced ultrasonic testing technology at its aircraft plant in Fort Worth, Texas.EG&G Wallac will serve as a worldwide distributor of Life Science Resources' advanced fluorescence imaging systems for electrophoresis and blotting applications. MuTech Corp. has signed on ESI Computing as its exclusive New England representative. MuTech manufactures video capture products for machine vision, medical imaging, image analysis and other applications.