Weighing scale is a special tool used to weigh valuables such as gold, silver and medicinal materials in ancient China.

Yan Ziyi, a measuring instrument, was popular in Qing Dynasty. It is mainly used to weigh some precious gold, silver, jewelry, Chinese herbal medicine and so on. , measured in grams, thallium is brass or copper. There are bones, ivory, horns, ebony and so on. The best is ivory, which is also of high value.

The stem of barnyard grass is the key component of barnyard grass, and its materials are heavy and tough ivory, hard black ebony, precision cast bronze and animal bones as white as jade. Barn courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard courtyard. Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard Courtyard, also known as thallium, is also made of bronze. There are many shapes of hammers, including cylinders with moderate height, ellipses with appropriate thickness, circles like coins, and combinations of gold and silver ornaments. In some cases, in order to expand the weighing range, a shovel is equipped with two shovels with different sizes.