The oscilloscope viewing screen of a radar receiver.
reflective viewing screen
CATHODE RAY tube, An evacuated glass tube with a viewing screen, used for displaying information.
The pilot in an airplane equipped with radar, flying at night, can see on the radar viewing screen distant buildings, or perhaps a dangerous mountain peak that is miles ahead.
The transmitter device has, according to IBM, a "large viewing screen with touch-point capabilities, an embedded keypad platform and a Linux-based operating system."
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