Note: When using the scale, first check whether the number of the dial is consistent with the number of the scale; Then check whether the weight is balanced and sensitive on the fixed satellite. If the balance is sensitive, it can be used, otherwise it should be repaired before use. When lifting the scale, it should be neither too far nor too close, nor too high nor too low.
If the weight is less than 1g, decimeter is required. The making principle and using method of Li Fen shovel are the same as those of shovel scale. Its size is smaller than the shovel scale, and the shovel rod is about 30cm long, mostly made of animal bones or metal. Its weighing range is between 200 mg and 50 g, and it is mainly used to prepare prescriptions of fine materials, precious and toxic drugs.
Clean the pan after the scale is used, and put the pan in the pan and hang it in a proper position to prevent it from getting wet and rusting, so as not to affect the accuracy. Centimeters should be put in wooden cases.
Composition
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.