圆周角实际上是角度的自然基准,鉴于这一基础理论,本文介绍一种角度规的自检方法,作为周检期内或修理中校准,供同行参考。圆周角的轨迹是一个动点绕一个定点回转一周,角值为360°的整圆。我们可以依据角度的这一自然基准和就某些几何学定义对角度规进行自检。 In fact, the circumferential angle is the natural reference of angle. In view of this basic theory, this paper introduces a self-checking method of angle gauge, which is used as a reference for peer review during the inspection period or during repair. The path of the circular angle is a full circle with a fixed point rotated by one fixed point for a period of 360 °. We can self-test the angle gauge based on this natural base of angles and for some geometrical definitions.