Plate 31, Coast Survey Report 1865 by E

Plate 31, Coast Survey Report 1865 by E. Hergesheimer. These diagrams are believed to include all possible conditions of the relation of the position of an undetermined point to three fixed points. A discussion of this diagram begins on page 215 of the 1865 Annual Report within Appendix No. 22, On the Plane-Table and Its Use in Topographical Surveying.

Photo Category: Coast and Geodetic Survey - Archive
Photo Date: 1865