16齿间歇式，以及16齿、24齿、32齿进给、音头和止动链轮，用于硝酸纤维素膜和醋酸纤维素膜。与胶片精确啮合的尺寸，最大限度地减少胶片磨损，提高视觉性能；齿形尺寸。对于电影技术来说，这种链轮已经过时了。交叉引用:BS 5550:第3.1.1BS 5550:第3.10.2小节

16-tooth intermittent, and 16-tooth, 24-tooth, 32-tooth feed, sound head and hold-back sprockets for use with cellulose nitrate film and cellulose acetate film. Dimensions for accurate engagement with film, minimize film wear, visual performance; dimensions for form of teeth. For motion picture techniques this type of sprockets is obsolescent.Cross References:BS 5550:Subsection 3.1.1BS 5550:Subsection 3.10.2