This book is written to meet the practical needs of the teaching plan for the “Interchangeability and Measurement Technology” course. This book is compiled by combining the achievements of recent education reforms and the construction of national first-class undergraduate courses, adopting the latest national standards, with the feature of closely link theory with practical application.
This book includes 6 chapters. Chapter 1 provides a comprehensive introduction to the basic concepts of interchangeability and standardization. Chapters 2-4 introduce in detail the relevant content of size tolerance, geometric tolerance, and surface roughness from the perspective of accuracy design and

Chapter 1 Introduction
1.1 Overview
1.2 Basic Concepts
1.2.1 Error and Tolerance
1.2.2 Interchangeability
1.2.3 Standardization and Series of Preferred Numbers
1.2.4 Precision Measurement
1.3 Purpose of This Course
Summary
Exercise 1
Chapter 2 Tolerance and Fit
2.1 Overview
2.2 Basic Terms and Definitions
2.2.1 Size of Hole and Shaft
2.2.2 Deviation and Tolerance
2.2.3 Fit Types and Basic System of Fit
2.3 Standards of Tolerances and Fits
2.3.1 Standard Tolerance Series
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