The United States Coast and Geodetic Survey began two years of painstaking measurement of the baseline using the recently available invar tapes
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The United States Coast and Geodetic Survey began two years of painstaking measurement of the baseline using the recently available invar tapes
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-16 from Wikipedia. The archived copy is preserved so this citation survives link rot.