Indicator tube 31LM5V with electrostatic focusing and electromagnetic deflection of an electron beam, with a blue screen glow, with a long yellow persistence. Designed for visual registration of processes in radio-electronic equipment of destination. Made in the USSR Dimensions of the tube: Largest diameter - 31 cm Maximum length - 42 cm Weight - 5 kg
According to the connection diagram of the electrodes with the leads: 1 - Modulator (landing) 2 - Cathode 3.4 - Heater 5 - Modulator 6 - Accelerating electrode 7 - Anode first A2 - Output of the anode of the second