Answer: moviola

AnswerCrossword Clue
MOVIOLAFilm-editing device
MOVIOLAFilm editor's gizmo
moviolaused for a device for editing motion-picture film and synchronizing the sound
moviolabrand of projection device for a motion-picture film allowing one person to see the film through a viewer and control its motion and speed, used in film editing, preparing titles, etc.
moviolaa device for viewing an editing film, also MOVIEOLA