1971 Edition Smoley's Four Combined Tables AND Precision Sterling Slide RuleThis book is a valuable resource for anyone interested in architecture, reference materials, environmental engineering, mechanical engimany for neering, or books. The 1971 Edition Smoley's Four Combined Tables provides comprehensive information on logs, squares, slopes, and rises, making it an essential tool for engineers and architects. The book is written in English and is part of the 1971 book series by C.K. Smoley's Sons. The comprehensive information provided in the book is helpful for anyone looking to expand their knowledge and libraries. The book is printed in leather bound 5.5 x 7in format. The individual pages are printed on a thin onion skin type paper. It is 2.5 in thick thus it contains hundreds of reliable statistics. .The condition is good to very good. I only found one marking in the book and that is an ownership sticker See photos. Also Included : An 11 x 1/4 in x 1-5/16 inch used but working hard plastic slide rule. It is used but in great working condition.