NK&K

Gamma radiation detectors; Nondestructive testing apparatus using x-ray, not for medical purposes; Radiation detectors; Radiation measuring apparatus; Radiological apparatus for industrial purposes, namely, radioactivity measuring apparatus, radio receiver; Optical lenses made of crystallized glass for optical inspection apparatus; Optical lenses made of glass; Optical lenses for optical machines and apparatus; Optical crystals used for inserting purpose, namely, optical lenses; Optical inspection apparatus; Optical inspections apparatus and their parts and fittings