PERKIN ELMER

MEASURING AND SCIENTIFIC INSTRUMENTS AND ACCESSORIES-NAMELY, SPECTROMETER SYSTEMS, FLAME PHOTOMETERS, GRATING SPECTROMETERS, INFRARED SPECTROMETERS, INFRARED SPECTROPHOTOMETERS, MONOCHROMATORS, RAPID SCAN SPECTROMETERS, ELECTROPHORESIS APPARATUS, ULTRAVIOLET SPECTROPHOTOMETERS, LABORATORY CHROMATOGRAPHY APPARATUS, DISPERSION INFRARED ANALYZERS, NON-DISPERSION INFRARED ANALYZERS, PROCESS VAPOR FRACTOMETER [ , AIRCRAFT AND TANK PERISCOPES, GUIDED MISSILE TRACKING INSTRUMENTATION, INFRARED RECONNAISANCE SYSTEMS, PERISCOPES, THEODOLITES, AERIAL PANORAMIC CAMERAS, AERIAL PHOTOGRAPHIC LENSES, VARIFOCAL LENS, OPTICAL COMPARATORS, MACHINE TOOL MICROSCOPE, MIRRORS, PRISMS, FLATS, SCHLIEREN WINDOWS, TELESCOPES, AND VIEWFINDERS ]