Scales, as an important tool for measuring the weight of objects, have played an indispensable role in business transactions and daily life since ancient times. With the development of the times and the progress of technology, the types of scales have gradually increased, and each type of weighing stone has its own unique characteristics and uses. The following is a detailed introduction to the types of scales:
1. Classification by material.
Stone Stone: Stone stone is one of the earliest weighing stones, mainly made of hard stone. Due to its stable weight and susceptibility to environmental influences, stone stone was widely used in ancient times. However, the disadvantage of stone stone is that it is heavier and not easy to carry and move.
Copper: Copper is a scale made of copper or copper alloy. The copper stone has a beautiful appearance and has a high ornamental value. At the same time, the weight of copper is stable, the corrosion resistance is strong, and the service life is long. In ancient times, bronze was often seen as a symbol of power.
Iron stone: Iron stone is a scale made of iron or iron alloy. Iron stone is moderately weighted and relatively low, so it is widely used in commercial transactions. However, iron is susceptible to corrosion and wear and tear and requires regular maintenance and replacement.
Lead: Lead: A lead stone is a scale made of lead or a lead alloy. Lead is stable in weight and easy to process, so it is used in some specific occasions. However, the disadvantage of lead is that it is dense and easy to pollute the environment.
2. Classification by shape.
Round Scales: Round scales are one of the most common scales, with a regular shape that is easy to process and manufacture. The weight distribution of the round weighing stone is uniform, which is conducive to improving the accuracy of weighing.
Square weighing stone: The square weighing stone has a stable structure and a large contact area, which is conducive to improving the stability of weighing. At the same time, the square weighing stone is easy to stack and store, saving space.
Special-shaped scales: Special-shaped scales are scales designed according to specific needs, and their shapes are different, such as horseshoe-shaped, dragon-shaped, etc. The special-shaped scale is not only practical, but also has high ornamental value and artistic value.
3. Classification by use.
Commercial scales: Commercial scales are mainly used for measurement work in commercial transactions, such as weighing commodities, calculating**, etc. Commercial scales require high accuracy and stability to ensure fair and just transactions.
Laboratory scales: Laboratory scales are mainly used for measurement work in scientific experiments and research work. Laboratory scales require extreme accuracy and stability to ensure the reliability and accuracy of experimental results.
4. Classification by historical period.
Ancient scales: Ancient scales mainly refer to the scales handed down from ancient times, such as Qin Quan, Han Quan, etc. These scales not only have historical value, but also are important physical materials for the study of ancient metrology history and economic development.
Modern scales: Modern scales refer to scales that have been manufactured and used since modern times. Modern weighing stones have been greatly improved and improved in terms of material, process and accuracy, which meet the needs of modern society for measurement work.
In short, there are many types of scales, each with its own characteristics. From the material, shape, use to historical period, the scale carries a rich cultural connotation and practical value. With the progress of science and technology and the development of society, the types and performance of weighing stones will continue to be improved and perfected, providing more accurate, stable and convenient tools for human measurement work.
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