Tolerance fit and measurement technology (mechanical design and system specialty) adopts the latest national standards, focusing on the application of basic concepts and standards. The content is concise, theory is integrated with practice, and each chapter is equipped with exercises, self-test questions and tolerance tables needed for teaching and problem solving to meet the teaching needs. "Tolerance Fit and Measurement Technology" can be used as a teaching material for mechanical and electromechanical majors in higher vocational and technical colleges, and also as a reference book for RTVU and engineering and technical personnel engaged in mechanical design and manufacturing, standardization and measurement testing.