Lot 3pcs Soviet USSR Personal Dosimeter ID-1 and similar items

Soviet USSR Army Personal Dosimeter ID-1 Dosimeter / Radiometer / GeigerCounter / RadiationDetector 100% Original Soviet. Made in USSR with belt (pocket) holder - Pen design PRICE FOR 3 PCS dosimeter ID-1 (If you need Charger for this decimeters, please see my lots). Dosimeter ID-1 was a dosimeter produced for the Soviet's Army during the cold war era. Radiometer ID-1 indicates amount of radioactivity absorbed by the body. Each soldier was equipped in this device in case of nuclear conflict. ID-1 was worn attached to pocket or belt by means of the retaining clip. A scale has range of 0-500 Rad. These dosimeters were produced in the 1980s in the USSR (Soviet Union). The dosimeter ID-1 allow one to estimate absorbed dose (Rads) of gamma radiation up to 500 Rad. Dosimeters are useful for estimating your absorbed radiation dose in a radioactive environment. For example, after a nuclear accident a dosimeter allows you to determine (roughly) the amount of radiation absorbed. These ID-1 dosimeters measure radiation in Rads, which is the absorbed dose. The equivalent dose (Rem) is equal to the Rads for gamma radiation, which is what this unit measures. Rem dose helps us determine radiation effects on the body. The modern unit for radiation is the Gray (Gy) for absorbed dose and the Sievert (Sv) for equivalent dose. Conveniently, 1 Gy is equivalent to 100 Rad and 1 Sv is equivalent to 100 Rem. So these dosimeters measure from 0 to 500 Rad (0 to 5 Gy). The ID-1 dosimeter is designed to monitor the accumulated dose of radiation that an individual soldier has been exposed to. Like all dosimeters, the ID-1 is a simple electrometer. Inside the device there are two electrodes which are charged by means of an external electrical source. Both of the electrodes within the device have the same charge and repel each other. The charge on the electrodes is neutralized when ionizing radiation passes between the electrodes and the casing. This reduction in the charge causes an electrode to move away from its start point, this movement can be seen against a scale when the user looks through the device. It's based on ionizing chamber that changes radioactivity radiation to an electric current, current discharges a capacitor that is also used as a power source. The device measures discharge of a capacitor over time. This is done by using a wire that accordingly changes its position and optic unit to make those results available for the operator. Purpose of use Measurement of gamma and X-ray radiation ambient dose equivalent (DE).