HIDEA

[ Material testing instruments and machines, namely, microhardness testers, colorimeters, illuminometers, fluorometers and thermometers; gas testing instruments; apparatus and instruments for physics, namely, densimeters, concentration meters and actinometers; electric measuring devices, namely, conductivity meters; refractometers; optical goods, namely, sunglasses and spectacles; ] optical apparatus and instruments, namely, spectrometers [ ; photometers; electric batteries ]