Did you know that rubber bands have their own dedicated and universal sizing (similar to clothing)? These sizes range from #8 to #117B and beyond.
A rubber band is usually measured in three basic dimensions:
This may sound confusing, but we're here to help.. Keep watching for instructions.
Measured by pinching two ends of the band together on a flat surface. the measurement from end to end equals the flat length.
The measurement across the band perpendicular to the flat length. The wider the cut width the tighter the hold.
Measured by placing your thumb inside the band and pinching the portion between your thumb and forefinger, usually measured with a Starrett Gauge.
WHAT DO THE SIZE NUMBERS MEAN
There are several hundred commonly used rubber band sizes which are based upon the three basic dimesions.
For bands with a flat length over 3-1/2 inches, the numbering starts over at 100. The next standard size with 1/8" cut is the 117B which is 7" x 1/8"
The origin of these size numbers is not clear. For the most part, the most widely accepted size numbers can be found using the Rubber Band Size Chart!