This International Standard specifies the cutting and perforating dimensions for 16 mm motion-picture film which is perforated 8 mm Type R, as well as the width of the motion-picture film after processing and slitting.
NOTE —Film perforated in accordance with this International Standard is also referred to as "double 8 mm motion-picture film".
BS ISO 486:1988 history
1995BS ISO 486:1995 Cinematography. 16 mm motion-picture film perforated 8 mm Type R. Cutting and perforating dimensions
1995BS ISO 486:1988 Cinematography - 16 mm motion-picture film perforated 8 mm Type R. Cutting and perforating dimensions