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Instrument station near Station 189

Image

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https://www.noaa.gov/media/digital-library-photo/pl23theb1570jpg

Description

Instrument station near Station 189.Care needed in moving.International Boundary Survey (Image credit: NOAA Central Library)

Credit

NOAA Central Library

Display Date

1906

Location

Alaska - Canada 141st Meridian

Category

Historic Coast & Geodetic Survey
Geodesy
Triangulation
Observing the Angles

Keywords

Geodesy
Triangulation
Angles
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