This study project looks at how metrology and inspection methods have advanced inside machining processes to improve production efficiency, accuracy, and precision. The study includes an extensive examination of the literature, observational research, and critical analysis to provide insights into the possibilities, difficulties, and practices that exist in the sector today. The literature review charts the development of metrology from manual measurement techniques to highly automated systems, emphasizing the crucial roles that optical inspection systems and coordinate measuring machines (CMMs) play in contemporary production. Modern inspection technologies, including as non-contact techniques and laser scanning, are also discussed, along with the difficulties in combining metrology data with digital production systems. Observational research offers direct knowledge of how metrology and inspection techniques are used in real-world industrial settings. Alongside difficulties including operator skill levels and equipment calibration, the usage of portable measuring tools, CMMs, and optical inspection systems for assessing surface finish and dimensional correctness is noted. Findings study points to growing problems such the requirement for experienced operators and operational unpredictability in machining processes, as well as the increasing integration of metrology and inspection methods into machining processes. But there are also prospects for development, with an emphasis on the ability to increase efficiency and quality control, via Industry 4.0 projects and additive manufacturing technology. All things considered, this study project clarifies the crucial function metrology and inspection methods play in contemporary manufacturing and provides guidance for enhancing quality assurance and machining process efficiency.