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Excerpt from A Manual of the Principal Instruments Used in American Engineering and Surveying: Manufactured by W. And L. E. Gurley, Troy, N. YWe are now' much better furnished with facilities Of all kinds to prosecute with enlarged success the business which we have conducted over twenty-six years.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a repr...

Excerpt from Manual of the Principal Instruments Used in American Engineering and Surveying, Manufactured by W. And L. E. Gurley We have usually made our needles about one twentieth of an inch broad and one third as thick, parallel from end to end, the north and south poles being distinguished from each other, by a small scollop on the north end. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. ...

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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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

Excerpt from A Manual of the Principal Instruments Used in American Engineering and Surveying, Manufactured by W. And L. E. Gurley Early sixty years ago the manufacture of Civil Engineers' and Surveyors' instruments was begun in this city by Jonas H. Phelps and William Gurley. Mr. Phelps retiring some years later, Lewis E. Gurley formed with William Gurley the firm of W. L. E. Gurley, and under this name the business has since been conducted....

Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

Excerpt from Manual of Gurley Hydraulic Engineering InstrumentsPart II. Gurley automatic water stage registers - Their Con strutcion, Installation and Operation introduction conditions requiring the use OF automatic water stage registers 1 - Where water is valuable and exceptionally accurate records are necessa1y. 2. - Where artificial or natural stream conditions cause sudden changes in stage in 24 hours. 3. - Where records are desired on a ¿...