The gauge of a film, literally, is its width. "Gauge" is commonly used synonymously with film format. (Pedantically, there are certain exceptions: IMAX is technically a specific format of 70mm gauge film, Super 8 is a specific format of 8mm gauge film, etc.)
Formats that you may encounter in exhibition contexts include:
Theatrical gauges
Frames per Foot (theatrical gauges)
16mm: 1 foot = 40 frames 35mm: 1 foot = 16 frames 5/70mm: 12.8 frames
Nontheatrical gauges
Large formats
External Links
- Wikipedia: List of film formats