Charles N. Pickworth was a British engineer and author renowned for his contributions to the field of engineering education, particularly through his practical manuals. His most notable work, 'The Slide Rule: A Practical Manual,' published in the early 20th century, served as an essential guide for engineers and students alike, demystifying the use of the slide rule, a critical tool for calculations before the advent of electronic calculators. Through clear explanations and practical examples, Pickworth's manual became a staple reference for those in technical fields, illustrating his commitment to making complex concepts accessible. Beyond his work on the slide rule, Pickworth's influence extended to various engineering disciplines, where he advocated for the importance of practical skills in engineering education. His writings not only reflected the technological advancements of his time but also emphasized the need for engineers to be adept in both theory and practice. Pickworth's legacy endures in the realm of engineering literature, where his practical approach continues to inspire educators and students in technical fields.