National Aperture Inc. - Salem, NHManufactures precision apertures and miniature micropositioning components. Apertures: pinholes, air slits, and patterns on foils, exotic materials, and reflective surfaces. Micropositioning products: miniature motorized linear and rotary translation stages, PC-based servo-control systems, and light-duty servo amplifiers.
Sutter Instrument Company - Novato, CAManufactures precision devices for scientific research and industrial OEM. Products include optical beam combiners, high-power LED, xenon light sources, high-speed wavelength switchers and shutters, multi-photon microscopes, translation systems, motorized stages, manipulators, electrophysiology amplifier systems, and micropipette pullers.