The Book of D. and . Mendeleev . Works by . T. 22. Metrological works" is a unique collection, which is an important part of the heritage of the great Russian scientist Dmitry Mendeleev .. The publication, prepared by a team of authors, immerses the reader in the world of metrology - the science of measurements, which plays a key role in the accuracy and standardization of scientific research and practical applications. Dmitry Mendeleev, known primarily as the creator of the periodic table of elements, was not only an outstanding chemist, but also a multifaceted scientist who made significant contributions to various fields of science, including physics, economics and, of course, metrology. This volume contains his work on measurement issues, standards and their implications for science and technology. Readers will be able to get acquainted with his views on metrological systems, as well as with proposals for improving measurement methods, which remain relevant in the modern world. This book will be of interest not only to specialists in the field of science and technology, but also to everyone who is interested in the history of science, the development of metrology and the impact of scientific discoveries on everyday life. Students, graduate students, faculty and researchers will find in it many valuable ideas and concepts that can serve as a basis for further research and discussion. It will also be useful to historians of science who want to better understand Mendeleev’s contribution to the development of metrology and its impact on the scientific community. The topics raised in this collection cover a wide range of issues, including measurement standardization, instrument accuracy and reliability, and the philosophical aspects of science. Mendeleev raises important questions about how measurements affect our understanding of the world around us and how they can be used to improve the quality of life. His work highlights the importance of precision in science and technology, which makes them relevant in our time, when accurate measurements are becoming increasingly important in various fields, from medicine to ecology. Mendeleev’s style, like his approach to science, is clear and logical. He skillfully combines theoretical concepts with practical examples, making his work available to a wide audience. In this volume, readers will be able to see how Mendeleev uses his knowledge and experience to solve complex problems, which makes his work not only scientific, but also inspiring. In addition, it is worth noting that this edition is part of a larger series devoted to the works of Mendeleev .. Other volumes collect his work in chemistry, physics and economics, which gives a complete idea of the versatility of his scientific heritage. Readers interested in a deeper understanding of his ideas can familiarize themselves with these volumes, which will allow them to see how different fields of science intersect and influence each other. Thus, "D. and . Mendeleev . Works by . T. 22. Metrological work is not just a scientific work, but a real find for everyone who seeks to understand how measurements shape our perception of the world and how scientific ideas can change our lives. This book will be a valuable addition to the library of anyone interested in science, history and philosophy.