Properties:

An optical device in which an image or a succession of images on motion picture film is observed through a magnifying lens or by projection of a light image or a succession of light images of the original subject onto an integral screen. It may present the illusion of motion, may have provisions for reproduction of sound from an optic and/or magnetic sound track in synchronization with the motion on the film, and may include notching or marking devices. It is normally used for editing motion picture film. Excludes equipment with splicing or cutting devices. See also viewing machine, motion picture.