Delone, N. B. Course of Theoretical Mechanics for Technicians and Engineers (Kurs teoreticheskoy mekhaniki dlya tekhnikov i inzhenerov), 1913. In Russian

Делоне Н. Б. Курс теоретической механики для техников и инженеров. С 163 чертежами в тексте.
Санкт-Петербург : Издание К. Л. Риккера, 1913.
XVI, 416 с. : 163 черт. Владельческий полукожаный переплёт эпохи с сохранением издательских обложек внутри, формат 24,5 × 17 см.
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Delone, N. B. Course of Theoretical Mechanics for Technicians and Engineers (Kurs teoreticheskoy mekhaniki dlya tekhnikov i inzhenerov). With 163 diagrams.
Saint Petersburg : K. L. Rikker Publishing House, 1913.
XVI, 416 pp. : 163 diagr. Owner’s contemporary half-leather binding, original publisher’s paper covers preserved, format 24.5 × 17 cm.

This 1913 edition is a quintessential textbook from the late Imperial era, reflecting the rigorous standards of Russian engineering education on the eve of the First World War. Authored by Nikolay Borisovich Delone, a distinguished professor at Kyiv University and a visionary in the field of aeronautics, this course was specifically designed to bridge the gap between abstract mathematical theory and practical industrial application.
The volume covers the core pillars of classical mechanics: statics, kinematics, and dynamics. Delone’s pedagogical approach is notable for its clarity and the systematic integration of 163 technical diagrams, which guide the reader through complex problems of equilibrium, the motion of material points, and the mechanics of rigid bodies. Given Delone's personal passion for gliding and aviation—he was one of Russia's primary early promoters of aeronautics—the text often reflects a keen interest in the physical principles that would later underpin the development of flight technology.
Delone was a member of a legendary scientific dynasty (his son, Boris Delone, would become a world-renowned mathematician), and his influence as a teacher in Warsaw and Kyiv helped shape a generation of engineers who would lead the industrialization of the early 20th century. This specific copy, bound in a high-quality contemporary half-leather binding with the original fragile paper covers preserved, is an excellent example of the bibliophilic care given to essential academic texts by their owners in the early 1900s.
It remains an important historical document for those interested in the history of technical education, the evolution of mechanical science in Russia, and the works of the pioneers of Russian aviation.