The width of the film stock or videotape. For photographic materials, the width of the original roll film from which the individual negative or print was cut.
Controlled Vocabulary
Photographic. 35 mm; roll film 616; roll film 620; roll film 220; roll film 135 [source: rulib]
Film. Standard 8mm; Super 8mm; 9.5mm; 16mm; Super 16mm; 28mm; 35mm; Super 35 (Superscope 235); 35mm 8-perf (VistaVision); 55mm; 65mm; Imax (15/70 and 8/70); 70mm; Other [source: MIC Archive Directory]
Videotape. 1/4-inch; 1/2-inch; 3/4-inch; 1-inch; 2-inch; 6.35mm; 8mm [source: Wheeler]
Audiotape. 1/8-inch; 1/4-inch; 1/2-inch; 1-inch; 2-inch [source: rulib]