Vintage scintillation dosimeter drg-05m led indication for experts from 100 to 10 mr / s subrange more than 100 mr / s. From 0.01 to 2.5 mR / s sub-range less than 2.5 mR / s. Plastic scintillation + photomultiplier sensored dosimeter! The photon energy range is from 15 keV to 8x10 keV.