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    Width  Film  Weight  Film   
    Inches Length  Ounces Gauge   
     
If you are unsure of a film's gauge you can use this tool
to determine the approximate gauge.
Cut a sample of the film.  20 feet or more is
recommended for better resolution.
 
Enter:
Film Width in Inches
Film Length in Feet
Weight in Ounces
 
The Film Gauge will calculate automatically.
 
Measuring with equipment capable of displaying
hundredths of ounces will give you a much better
estimate of gauge that a scale that only reads tenths.
The more accurate your length is the better your results
will be.
This method certainly separates a 63 gauge from an 80
gauge but will not be able to identify a
79 gauge versus an 80 gauge.