blink comparator

noun

an optical instrument used to detect small differences in two photographs of the same field or object by viewing them alternately, switching rapidly from one to the other.

Origin of blink comparator

First recorded in 1925–30

Words nearby blink comparator

bling-bling, blinging, blinglish, blini, blink, blink comparator, blinker, blinkered, blinkers, blinking, blinks