根据ISO 12301，本文件规定了缠绕衬套内径的检查（见ISO 3547？2:2017，方法C），并描述了必要的检查方法和测量设备。 注1:本文件中的所有尺寸均以毫米为单位，除非另有说明/指定。 注2:ISO 3547-1中给出了缠绕衬套的尺寸和公差。 注3:检查壁厚是ISO 3547-7的主题。 注4:ISO 3547-5规定了缠绕衬套外径的检查。

The document specifies, following ISO 12301, the checking of the inside diameter of wrapped bushes (see ISO 3547？2:2017, method C) and describes the necessary checking methods and measuring equipment. NOTE 1 All dimensions in this document are given in millimetres except where otherwise noted/designated. NOTE 2 The dimensions and tolerances of wrapped bushes are given in ISO 3547？1. NOTE 3 Checking of the wall thickness is the subject of ISO 3547？7. NOTE 4 Checking of the outside diameter of wrapped bushes is the subject of ISO 3547？5.