<P> The libra ( Latin for `` scales / balance '' ) is an ancient Roman unit of mass that was equivalent to approximately 328.9 grams . It was divided into 12 unciae ( singular : uncia ) , or ounces . The libra is the origin of the abbreviation for pound , `` lb '' . </P>
<P> The libra ( Latin for `` scales / balance '' ) is an ancient Roman unit of mass that was equivalent to approximately 328.9 grams . It was divided into 12 unciae ( singular : uncia ) , or ounces . The libra is the origin of the abbreviation for pound , `` lb '' . </P>
why is the short form of pounds lbs
why is the short form of pounds lbs
libra Latin for `` scales / balance ''
libra Latin for `` scales / balance ''