When we weigh 1 ryo with chia-liang standard measure in "Book of Han, Treatise on rhythm and the calendar," actual measured value was 14.167 grams which equivalent to 1 'smaller ryo.'
嘉量による1両は『漢書律歴志』の記述に基づく実測の結果は14.167グラムであり、これは「小両」に相当する。