How to identify a steelyard

The weight can be read by the scale on the rod.

There are two kinds of steelyard: one big star weighs a catty, with ten small stars in the middle, each representing one or two, and the fifth one is generally a little bigger than the small star and a little smaller than the big star, representing half a catty; Generally, one big star in the scale of one kilogram represents five small stars in the middle of one kilogram, and each star represents two or two.

Extended data:

The history of steelyard:

1 Two thousand years ago, our ancestors invented the wooden pole scale by using the lever principle. In the Tang Dynasty, money, cents, cents and other units all joined the scale. Seven points is one or two, seven points is one point. The scale has always followed the rule that 16 is one catty, which lasted for more than 1000 years.

2. The nail scale industry appeared after Qin Shihuang unified measurement. According to records, there were several nail scale stalls in Xitang in the late Qing Dynasty. At that time, the material selection of nail scale was rough, the manufacturing process of manual scale was simple, and the weighing accuracy was relatively low. During the Republic of China, it was changed to 16 binary, and after liberation, it was changed to 10 binary.

After the 1960s, Xitang Handmade Weighing Shop won the praise of local people for its sincere craftsmanship and merchant style. Nail scales have been in line with international standards since the 1980s, with kilograms as the standard. The manufacturing process of wooden scales requires high precision, and many processes represent people's understanding of ancient degree measurement, which has certain preservation value.

With the development of the times, electronic scales became popular in 1960s and 1970s. However, manual scales still occupy a certain market because they are easy to carry. Manual scales are suitable for some mobile vendors, and now the main buyers of manual scales are some small vendors in rural areas. With the development of tourism in Xitang, tourists buy more scales. Many people also buy hand-made scales when they move and get married to get a good impression.