Direct-Reading Dosimeter - W138, 0-200mR with Sapphire Window

The Direct-Reading Dosimeters are rugged, precision instruments. They are designed to measure and directly read, at any time accumulated dose of gamma and x-ray radiation exposure. The Direct-Reading Dosimeter is designed to satisfy military specifications for the IM-Series RADIAC METER and ANSI N13.5 and N322 requirements. The sturdy metal clip attaches the dosimeter to a pocket or any object to monitor total radiation exposure. They are hermetically-sealed and immersion proof. Model W138 The Direct-Reading Dosimeter is a pocket-size, carbon-fiber electroscope with an ion chamber for detecting and indication of integrated exposure to Gamma and X-Ray radiation. It has a thin wall which permits the penetration and detection of radiation.  This model comes with a hardened sapphire window that won't scratch even in the toughest of conditions. Dosimeters are extremely sensitive instruments. Although they are constructed for rugged use, they should receive the same care as a wristw