This part of JB/T 10231 specifies the testing methods and testing instruments for testing various finished reamers. This section applies to the testing of reamers produced according to GB/T 1131~1135, GB/T 4243~4248, JB/T 7956.1~7956.3, GB/T 1139, GB/T 1140, and GB/T 4250~4253.