NOAA Photo Library Banner
Takes you to the Top Page Takes you to the About this Site page. Takes you to the Contacts page. Takes you to the HELP page. Takes you to the Credits page. Takes you to the Collections page. Takes you to the search page. Takes you to the Links page.

NOAA Photo Library Image - theb2537

Collimating the inner tower at Station Winnie. Collimation involved placing the observing instrument directly over the mark. Triangulation party of Carl I. Aslakson

Image ID: theb2537, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Itasca County, Minnesota
Photo Date: August 21, 1934
Credit: Captain Ray Tryon, C&GS

Category: Geodesy/Triangulation/Towers/Bilby Steel/

• High Resolution Photo Available




Publication of the U.S. Department of Commerce, National Oceanic & Atmospheric Adminstration (NOAA),
NOAA Central Library
NOAA Privacy Policy | NOAA Disclaimer
Last Updated: April 30, 2013