Millivoltmetr "B3-25".
PTA-ni sozlash va boshqarish vositalari.Millivoltmetr "V3-25" 1973 yildan beri Tallinning "Punane-RET" zavodi tomonidan ishlab chiqarilmoqda. V3-25 millivoltmetr sinusoidal kuchlanishni 3 mV dan 3 V gacha, 100 KHz dan 1000 MGts gacha bo'lgan chastota diapazonida 10, 30, 100, 300 mV, 1 va 3 V o'lchash uchun mo'ljallangan.
