Cathode-ray tube (CRT ) 16LO3I oscilloscope. Screen size is 70 x 130 mm. Green glow color. Designed for visual registration of electrical processes in various electronic devices
Russian tube 6E5S - "Magic Eye" tuning indicator. This octal-base tube produces a iconic green glow and serves as a visual indicator for radio tuning, signal strength, or audio output levels in vintage radios, tape recorders and audio amplifiers. Equivalents: 6E5, 6U5, EM34, 6E5G, 6G5G. NOS