Practical Surveying for Surveyors' Assistants, Vocational, and High Schools

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Practical Surveying for Surveyors' Assistants, Vocational, and High Schools - McCullough, Ernest

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...be necessary. The base line is taken inside the field when it is possible, as the lengths of the sights is thereby reduced to a minimum; but ...