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Re: Canarsie CBTC

Posted by Stephen Bauman on Sat Jun 18 11:21:25 2005, in response to Re: Canarsie CBTC, posted by AlM on Sat Jun 18 11:14:10 2005.

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I don't believe that surveyors who use GPS in their job make that assumption.

They use only one reference point. All their other points are still measured optically. They can find that reference point again, thanks to repeatability.

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