ဒစ်ဂျစ်တယ် DC voltmeter
Gelsonlab HSPE-078 ဒစ်ဂျစ်တယ် DC voltmeter for Teaching use
Product Specification of ဒစ်ဂျစ်တယ် DC voltmeter: Power supply DC6V, four-digit digital tube display, respectively, 20V and 2V range, shell size 16.5*12*5.5cm