FIELD: devices for measurements of ionizing radiation. SUBSTANCE: polymer film having side perforation is rewind through several grounded rollers in filed of corona discharge. Each roller is covered by raised characters representing digits, letters or pictures. Polarization method involves order of rollers so that next rollers contain all pictures of previous ones and film moves so that electric pictures on film are subsequently superimposed. Number of rollers depend of range of doses to be measured. EFFECT: increased functional capabilities. 1 dwg
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