Aligning iced-bar base apparatus with striding level.
Assuring iced-bar apparatus is horizontal.
Fig. No. 5, Appendix No. 3, Report of Superintendent ... 1901, p. 244.
Image ID: theb1139, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Photo Date: 1901
Category: Geodesy/Base Line/
• High Resolution Photo Available
of the U.S. Department of Commerce, National Oceanic & Atmospheric
NOAA Central Library
| NOAA Disclaimer
April 30, 2013