pl23_theb3049.jpg
![Bronze triangulation mark theb3049.jpg Bronze triangulation mark](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb3049.jpg)
Description
Bronze triangulation mark.These marks are found throughout the United States and its territories.Triangulation marks have known latitudes, longitudes, and plane coordinates
Credit
NOAA
Collection
Historic Coast & Geodetic Survey
Keywords
Geodesy
Marks