← Operation of the Bell and Howell sound projector (1957)

Suggest a correction

Spotted something wrong or missing on Operation of the Bell and Howell sound projector (1957)? Tell us below. You don't need an account. An editor reviews every suggestion, and if it's accepted your name is added to the film's Sources list. Your email address is never shown publicly; we only use it if we have a question about your suggestion.