如存在差异，见附录A。 该SAE标准定义了用于测量活塞环的测量原理。它适用于往复式内燃机直径不超过200 mm的活塞环。 这些检查测量原理也可用于在类似条件下工作的压缩机的活塞环。

Differences, where they exist, are shown in Appendix A. This SAE Standard defines the measuring principles to be used for measuring piston rings. It applies to piston rings up to and including 200 mm diameter for reciprocating combustion engines. These inspection measuring principles may also be used for piston rings for compressors working under analogous conditions.