This is an OCR edition without illustrations or index. It may have numerous typos or missing text. However, purchasers can download a free scanned copy of the original rare book from GeneralBooksClub.com. You can also preview excerpts from the book there. Purchasers are also entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Subtitle: Adapting It to the Different Professions, With Examples and Illustrations for Each Profession; and Also to Colleges, Academies and Schools, With a Time Telegraph, Making, by Uniting the Two, a Computing Telegraph; Original Published by: Printed for the publisher in 1846 in 82 pages; Subjects: Slide-rule; Ready-reckoners; Business & Economics / Economics / General; Mathematics / General;