在修理过程中,判断指针是否垂直于横梁的方法有多种,而等腰法是其中简单可靠的方法之一。用等腰法检查指针与横梁垂直法的方法是:将天平的横梁取下,平放在桌上(如图a)。设横梁的纵轴线为EF,中刀刃为0,左右两边刀刃为A、B,指针末端为C。拿一根足够长的细线、靠在两边刀刃A、B上,绕过两边刀壳外侧,使线两端相交于指针末端C(线要 In the repair process, to determine whether the pointer is perpendicular to the beam of a variety of ways, and isosceles one of the simple and reliable method. Isometric method to check the pointer and vertical beam method is: remove the balance beam, flat on the table (Figure a). The longitudinal axis of the beam is set to EF, the blade is 0, left and right sides of the blade A, B, the pointer end of C. Take a long enough thin line, leaning on both sides of the blade A, B, around both sides of the outer shell, the two ends of the line intersect at the end of the pointer C (line to