在材料试验机示值检定工作中，其测力机构不水平将引起试验机示值误差超差，本文将讨论利用换铊法对其进行调整。需要说明的是，测力部分前后安装不平时，会使摆轴与轴承之间的磨擦力增大，还会增加活塞与油缸的磨擦力，一般使试验机示值表现为负差。实践表明在一定程度上对示 In the material testing machine indication verification work, the force measurement mechanism is not level will lead to test machine error in the indication, this article will discuss the use of thallium for its adjustment. It should be noted that the load cell before and after the installation of uneven, will make the friction between the pendulum shaft and the bearing increases, but also increase the friction between the piston and the cylinder, the general performance of the test machine showed a negative difference. Practice shows that to some extent on the show