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![Irish Ordinance Survey baseline theb1642.jpg Irish Ordinance Survey baseline](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb1642.jpg?itok=eIJ3SlNz)
Description
Irish Ordinance Survey baseline.First to use bi-metallic compensating principal for base line measurement (Image credit: NOAA Central Library)
Credit
NOAA Central Library
Display Date
1828
Location
Ireland
Collection
Historic Coast & Geodetic Survey
Geodesy
Triangulation
Baseline & Treverse Measurements
Keywords
Geodesy
Triangulation
Baseline
Bar