BS ISO 3639:1981

This standard BS ISO 3639:1981 Cinematography. Projection reels/spools 75 to 312 mm diameter for 8 mm Type S motion-picture film. Dimensions and specifications is classified in these ICS categories:

• 37.060.10 Motion picture equipment

This International Standard specifies the dimensions for 8 mm Type S motion-picture projection reels/spools of 75 to 312 mm diameter (with the exception of the 75 mm Type No. 7) that are interchangeable on all types of reel-to-reel projection equipment.

NOTE — The No. 7 reel (75 mm), although temporarily recognized, will be superseded by that specified in ISO 6033. It is recommended that new projection equipment and reel/spool manufacturing capacity should comply with the requirements of ISO 6033.