Scientific, surveying, measuring, checking and supervision apparatus and instruments, namely, devices for the measurement of ionizing and radioactive radiation, x-rays, gamma-radiation, beta-radiation and neutrons

Scientific, surveying, measuring, checking and supervision apparatus and instruments, namely, devices for the measurement of ionizing and radioactive radiation, including x-rays, gamma-radiation, beta-radiation and neutrons

Scientific, surveying, measuring and checking (supervision) apparatus and instruments, namely, devices for the measurement of ionizing and radioactive radiation, including x-rays, gamma-radiation, beta-radiation and neutrons