Established in 1950 and incorporated in 1966, Humboldt Instrument Company Inc. has been one of the leading full-service machine shops in Northern California. Located in San Leandro, Calif., the firm specializes in the areas for mechanical assembly, welding, grinding and polishing. It serves various markets, including precision machine work, CNC (computer numerical control) milling/turning, prototype work, vacuum systems/electro, mechanical assembly, CAD(computer-aided design)/CAM (computer-aided manufacturing) and CMM (capability maturity model) inspection. Humboldt Instrument Company Inc. specialties include the fabrication of vacuum chambers, related components as well as the machining of castings and all types of ferrous/non-ferrous alloys.