Charles N. (Charles Newton) Pickworth

Charles Newton Pickworth was a British mechanical engineer, editor, and technical author. He is chiefly remembered today for writing practical engineering manuals, including The Slide Rule: A Practical Manual and The Indicator Handbook, books aimed at making specialized tools and methods easier to understand for working readers.

His writing has had a long afterlife in the public domain and in library catalogs, which suggests that his manuals remained useful well beyond their first publication. The surviving records available here consistently identify him with engineering and technical publishing rather than with literary fiction, so his appeal comes from clarity, usefulness, and hands-on expertise.

Although a detailed modern biographical sketch is hard to verify from the sources I found, the dates 1861–1955 are consistently associated with him, and his reputation rests on accessible technical instruction. For listeners interested in the history of calculation, mechanics, and practical education, he represents a very readable side of early modern engineering culture.