A radiation dosimeter is a device that measures dose uptake of external ionizing radiation. The radiation dosimeter is an important personal dose measuring instrument. A type of electroscope is also used in the quartz fiber radiation dosimeter. With this a dosimeter was brought into the vessel to measure the radiation levels inside. Typical measurements of light have used a Dosimeter. Typical measurements of light have used a dosimeter. The quartz fiber device is an older dosimeter design. The quartz fiber dosimeter is a rugged form of a device called a Lauritsen electroscope. The noise dosimeter is typically programmed by a hearing conservationist, sound engineer or audiologist. Their dosimeter beeps if the limit is reached and the worker's site access is cancelled. The mechanism is similar to that of a thermoluminescent dosimeter. It is similar to American dosimeter chargers. There is not information available for the dosimeter worn by the pilot in aircraft 831. Twenty-five years have passed since Valeriy Starodumov worked as a dosimeter scout in September 1986. Each worker had to stop the operation once the dosimeter alerted.