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中国古人在其漫长的科技实践中,形成了抽象角度概念,但并没有建立相应的角度计量。他们在不同的领域,用不同的方法解决相应的角度测量问题。在天文观测过程中,古人运用比例对应思想测度天体空间方位。在手工业制造领域,以《考工记》为代表的古代技术百科全书则采用构造法解决具体的角度问题。到了明末,《几何原本》等西方著作的引进,使中国人懂得了角度概念,接受了世界通用的360°分度体系,了解了角度测量仪器和测量方法,角度计量才得以在中国建立起来。
In their long history of science and technology, the ancients formed the concept of abstract perspective, but did not establish the corresponding angle measurement. In different fields, they use different methods to solve the corresponding angle measurement problems. In the process of astronomical observation, the ancients measured the celestial space orientation by using the proportion correspondence. In the field of handicraft manufacturing, the ancient technical encyclopaedia represented by “Kao Gong Ji” uses constructive method to solve specific angle problems. By the end of the Ming Dynasty, the introduction of Western works such as Geometry Original made the Chinese understand the concept of angle and accepted the world-wide 360 ° indexing system. With the help of angle measuring instruments and measuring methods, angle measurement can be established in China. .