This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the p
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the publi
Excerpt from A Manual of the Principal Instruments Used in American Engineering and Surveying: Manufactured by W. And L. E. Gurley, Troy, N. Y We are now' much