A ancient unit of volume for grains and dry commodities, used in the Bible. The omer was equal to 0.1 ephah; this is believed to equal about 4.032 liters, 246.05 cubic inches, 0.9154 U.S.dry gallon, or 0.8869 British Imperial gallon
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}