UNITS A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site apothecaries' weights A system of weights formely used by pharmacists in preparing medicines. 1 oz ap = 1 oz troy = 1.0971 oz avoidupois = 31.103 g. Related category    • UNITS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP