Shrinkage gauge

 

Device to measure shrinkage in motion picture film. Many types are available.

 

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Operation of the Krumm film shrinkage gauge
Standard and short pitch

35mm place film over the pins 56 perforations apart, this equals 14 frames.
16mm place film over the pins 35 perforations apart, this equals 35 frames.
Std. 8mm place film over the pins 70 perforations apart, this equals 70 frames.
Super 8mm place film over the pins 63 perforations apart, this equals 63 frames.