A set of rings to help categorize eggs by size. Egg scales size eggs by weight. These rings are for preforming a preliminary size rating to generally organize eggs by size. If it is assumed that all eggs being measured are of AA quality and of regular shape, these rings can accurately categorize eggs into respective Jumbo, Large, Medium, and Small.

Generally, not officially.

Small is 39 and below

Medium is 39 and 41 mm

Large is 43

Extra Large is 45

Jumbo is 47 and above