Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
John S. Reid (1856-) was a renowned mechanical engineer known for his expertise in machine design and mechanical drawing. With years of experience in the field, Reid has contributed significantly to the advancement of engineering knowledge through his practical insights and educational materials. His dedication to teaching and sharing engineering principles has made him a respected figure in the mechanical engineering community.