cathode ray oscillograph CRO
cathode ray oscillograph tube
cathode-ray oscillograph
cathoderay oscillograph
cathode-ray tube oscillograph
Aluminized Cathode-Ray Tube
beam penetration cathode ray tube
beam-shaping CRT(cathode-ray tube)
bistable storage cathode ray tube
brightness-modulated cathode ray tube
cathode ray (tube) display
cathode ray (type) indicator
cathode ray accelerator
cathode ray beam intensity modulation
cathode ray curve tracer