A kind of high precision auto-centering device design for gun tube internal bore parameter surveying instrument is described, and the working principle,design principle and centering precision to be realized for this kind of centering device are given.

• 介绍了一种用于火炮身管内孔参数测量仪的新型自动定心装置设计；给出了这种定心装置的设计思想、工作原理和所达到的定心精度.