This standard BS ISO 1781:1983 Cinematography. Projector usage of 8 mm type S motion-picture film for direct front projection is classified in these ICS categories:
37.060.20 Motion picture films. Cartridges
37.060.10 Motion picture equipment
This International Standard specifies the emulsion orientation, the rate of projection and the position of the image area for 8 mm Type S motion-picture film as used for direct front projection.