Our Dosimeters employ ore-containing materials for radioactive detection, as well as a cobalt source for electronic accelerator irradiation of beta, gamma, and x-ray radiation ranging in energy from 25 keV to 7 MeV. The magnifying tube, which has a built-in Geiger-Muller counter, can detect and localise gamma and beta radiation sources in seconds. These devices are only used in nuclear facilities for radiation protection and detection of beta and gamma rays.