William Bramsen, Japanese Lineal Measures [and Weights… (1877)
“ Avoirdupois, but generally reckoned equal to one picul, or 133 1/3 lbs. Kin. 斤 0160 Momme. 601.04347200000 9275.5126240757 1.6103320528 1.3250732320 About 1 13/40 lb., but generally taken as equal to 1 1/3 lb. Apothecaries' weight: Riyô. 兩 0004 Momme. 15.02608680000 231.8878156019 0/0402583013 0.0331268308 Somewhat less than 1/2 ounce Troy (or Old Apothecaries' Weight) . About 8 1/2 drachms Avoirdupois (or New Apothecaries' Weight) . Carriage weights: By Land. ”
