Computers; light-emitting electronic pointers, namely, luminous pointers, laser pointers; radios; photography enlarging apparatus, namely, photography projectors; measuring instruments, namely, tool measuring instruments, scientific instrumentation for measuring weight; resistance measuring instruments; optical goods, namely, optical tables, optical glasses, optical readers; optical mirrors; apparatus and instruments for astronomy, namely, spectrometers and parts and fittings therefor, cameras, photometers; telescopes; semi-conductors