West Valley Precision Inc. is one of the leading providers of precision machining services in the Bay Area. Based in San Jose, Calif., the firm has supplied precision parts and assemblies to Silicon Valley companies since 1987. Operating 23,000-square-foot facility, it uses state-of-the-art production and test equipment, including computer numerical control (CNC) lathes, Swiss screw/CNC milling machines and other manual/computer equipment. West Valley Precision Inc. produces and supplies parts for markets ranging from telecommunications equipment to vacuum components and optics to analytical instrumentation.