16-tooth intermittent, 16-tooth, 24-tooth, 32-tooth feed, sound-head, holdback sprockets. Dimensions, including dimensions for form of teeth. For Type C. 1870 film, film having perforations 0.078 m x 0.078 m or 0.110 m x 0.078 m.
BS 5550-3.10.2:1965 history
1965BS 5550-3.10.2:1980 Cinematography. 35 mm film. Sprockets - Specification for universal sprockets for 35 mm perforated film
1965BS 5550-3.10.2:1965 Cinematography - 35 mm film - Sprockets - Specification for universal sprockets for 35 mm perforated film