Early egg scales helped small farmers grade and market eggs.
Back view of two Acme scales. The Acme with the flange (at right) has a narrower base.
The Dominion egg scale from Canada has seven fins and a cast-iron base.
This version of the Acme was introduced at the Chicago World’s Fair in 1933-34.
The later Multiplo retained the cast aluminum base and had a much deeper egg cup.
This Multiplo egg grader was advertised in a 1949 Clark’s Catalogue of Poultry Feeds and Equipment. It is identical to the original model of the Acme egg grader manufactured in the U.S. from 1924-36, except for the gradations of 1-1/2, 1-5/8, 1-3/4, 1-7/8, 2, 2-1/8, 2-1/4, 2-3/8 and 2-1/2 oz. per egg instead of Acme’s standard gradations of 19, 20, 21, 22, 23, 24, 26, 28 and 30 oz. per dozen.
Acme egg scales were constructed of cast and sheet aluminum. This scale was made before 1933.
Product name and U.S. patent date are shown on the outermost fin of most Acme egg scales.