The document specifies the cutting and perforating dimensions for safety raw stock for 16 mm motion-picture and magnetic films with one or two rows of perforations.
DIN ISO 69:1999 history
1999DIN ISO 69:1999-04 Cinematography - 16 mm motion-picture and magnetic film - Cutting and perforating dimensions (ISO 69:1998)
1999DIN ISO 69:1999 Cinematography - 16 mm motion-picture and magnetic film - Cutting and perforating dimensions (ISO 69:1998)