These carbon fiber dosimeters are rugged, precise instruments that measure and directly read accumulated dose or quantity of gamma and x-ray exposure. A high-strength metal clip can be used to attach the dosimeter to a pocket or any object for monitoring radiation exposure. Hermetically sealed and immersion proof. Accuracy is ±10% of true dose for Cs137 or Co60 gamma. Dose rate independent. Requires use of Charger (769-900-11) to rezero. Dimensions: 1.5 cm dia. x 11 cm L. Other ranges are available. Warranty: 2 years.