A traditional unit of force, equal to the force experienced at the earth's surface by a mass of one ounce. One ounce force equals 1/16 pound force or about 0.278 014 newton
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}