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. Original Published by: D.A. St. Clair Press in 1915 in 111 pages; Description: One of the blue prints is in pocket on front lining paper, the other is mounted on back lining paper.; Subjects: Surveying; Area measurement; Science / Earth Sciences / Geography; Technology & Engineering / Civil / General; Technology & Engineering / Surveying;