Standard 8 mm film was used in an 8 mm projector and Straight Eight camera in 1924 and 1935, and later with other equipment manufactured by Carl Zeiss, Fuji, and Canon.
In the US, Bell and Howell introduced an 8 mm projector in 1934, and in 1935, the Filmo Straight Eight camera, using pre-prepared 8 mm wide film. 
