本书根据高等教育国际化相关要求，为满足“互换性与测量技术”课程双语教学和留学生英文授课需要而编写，系统介绍了互换性与测量技术的基本概念、相关标准的构成、基本内容及具体规定，并提供在线课程。同时，每章均给出教学目标、综合性教学案例剖析，并附有知识脉络图、思考/练习题、重点术语及定义。本书可作为高等学校机械类相关专业双语教学或全英文授课的教材或参考书，也可供相关工程技术人员参考。
This book is compliled to meet the needs of bilingual and English teaching of the “Interchangeability and Measurement Technology”course for international students，according to the requirements of the internationalization of higher education.In this book，the fundamental concepts of interchangeability and measurement technology，as well as the basic content and specific regulations of the relevant standards are systematically introduced.And the corresponding online open course is also provided.Meanwhile，teaching objectives，analysis of comprehensive teaching cases，knowledge frame diagram，questions and exercises，and definitions for key terms are given in each chapter.This book can simultaneously serve as the textbook of bilingual and English teaching for mechanical related majors as well as reference book for concerned engineers and technicians.

Chapter 1　Introduction
1.1 Interchangeability and Tolerance
1.2 Standards and Standardization
1.3 Series of Preferred Numbers
1.4 Overview of Geometric Parameters Detection
1.5 Properties and Objectives of the Course
Questions and Exercises
Definitions for Key Terms
Chapter 2　Limits and Fits of Shaft and Hole
2.1 Introduction
2.2 Basic Terms and Definitions
2.2.1 Terms and Definitions of Size
2.2.2 Terms and Definitions of Deviation and Tolerance
2.2.3 Terms and Definitions of Fit
2.2.4 Fit System
2.3 Limits and Fits of Common Size
2.3.1 Standard Tolerance Series
2.3.2 Fundamental Deviation Series
2.3.3 Indication of the Limits and Fits on Engineering Drawing
2.3.4 Recommended Tolerance Zones of Hole/Shaft and Fits
2.4 Limits and Fits of Large Size Hole/Shaft
2.5 General Tolerance for Linear Sizes without Individual Tolerance Indication
2.6 Size Accuracy Design
2.6.1 Basic Principles and Methods
2.6.2 Selection of Fit System
2.6.3 Selection of Standard Tolerance Grade
2.6.4 Selection of Fit Type
2.6.5 Example for Size Accuracy Design
Project Ⅰ：Size Measurement
Questions and Exercises
Definitions for Key Terms
Chapter 3　Geometrical Tolerance and Error Measurement
3.1 Introduction
3.2 Geometrical Features and Characteristics of Geometrical Tolerances
3.2.1 Geometrical Features and Their Classifications
3.2.2 Characteristics and Symbols of Geometrical Tolerances
3.3 Indication of Geometrical Tolerance on Engineering Drawing
3.3.1 Geometrical Tolerance Frame and Datum Symbol
3.3.2 Indication of Measured Features
3.3.3 Indication of Datum
3.3.4 Simplified Indication Methods
3.4 Geometrical Tolerance Zone
3.4.1 Fundamental Characteristics of Geometrical Tolerance Zone
3.4.2 Datum
3.4.3 Form Tolerance Zone
3.4.4 Orientation Tolerance Zone
3.4.5 Location Tolerance Zone
3.4.6 Profile Tolerance Zone
3.4.7 Runout Tolerance Zone
3.5 Tolerance Principles
3.5.1 Terms and Definitions about Tolerance Principle
3.5.2 Independence Principle
3.5.3 Envelope Requirement
3.5.4 Maximum Material Requirement
3.5.5 Least Material Requirement
3.6 Geometrical Accuracy Design
3.6.1 Selection of Geometrical Tolerance Characteristics and Datum
3.6.2 Selection of Tolerance Principle
3.6.3 Selection of Geometrical Tolerance Value
3.6.4 Example for Geometrical Accuracy Design
ProjectⅡ：Measurement of Geometrical Deviations
Questions and Exercises
Definitions for Key Terms
Chapter 4　Surface Roughness and Its Measurement
4.1 Introduction
4.1.1 Definition of Surface Roughness Profile
4.1.2 Effect of Surface Roughness on Performance and Fit Quality
4.2 Evaluation Parameters of Surface Roughness
4.2.1 Basic Terms and Definitions
4.2.2 Definitions of Evaluation Parameters
4.3 Selection of Surface Roughness Parameter and Its Value
4.4 Indications of Surface Texture Requirements on Engineering Drawing
4.5 Measurement of Surface Roughness
Project Ⅲ：Measurement of Maximum Height of Profile
Questions and Exercises
Definitions for Key Terms
Chapter 5　Tolerance and Measurement of Involute Cylindrical Gear
5.1 Introduction
5.2 Operating Requirements for Gear Drive
5.3 Main Influence Factors on Gear Drive Error
5.4 Evaluation Parameters of Involute Cylindrical Gear and Their Measurement
5.4.1 Evaluation Parameters of Transfer Motion Accuracy and Their Measurement
5.4.2 Evaluation Parameters of Drive Stability and Their Measurement
5.4.3 Evaluation Parameters of Load Distribution Uniformity and Their Measurement
5.4.4 Evaluation Parameters of Backlash and Their Mea