US Nuclear Corp. is engaged in developing, manufacturing, and selling radiation detection and measuring equipment. Its segments include Optron and Overhoff. Optron facility produces radiation monitors, while the Overhoff facility manufactures tritium monitors. Both facilities offer calibration and repair services to the respective monitor systems or devices. It specializes in the design and manufacture of radiation detection equipment monitors and hand-held devices. Overhoff specializes in the design and manufacture of tritium air monitors and water monitors. Optron is in Canoga Park, California and Overhoff is in Milford, Ohio. It specializes in test and maintenance meters for x-ray machines for both medical and industrial users. It markets and sells its products to consumers throughout the world. It supplies instrumentation to a diverse range of industries utilizing radio nuclides: nuclear power plants, national laboratories, government agencies, homeland security and others.