BS 5550-3.10.2:1980

This standard BS 5550-3.10.2:1980 Cinematography. 35 mm film. Sprockets is classified in these ICS categories:

• 37.060.10 Motion picture equipment

This British Standard relates to the dimensions of 16-teeth intermittent sprockets, and 16-teeth, 24-teeth and 32-teeth feed and hold-back sprockets for 35 mm perforated film having perforations in accordance with Type P, N and AC of BS 5550-3.1.1. It specifies the essential dimensions for accurate engagement with the film, and gives recommended dimensions in respect of the form of the teeth.

NOTE The dimensions of sound-head sprockets are normally similar to those given in this standard for feed sprockets.

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.