Re: Amateur GPSr accuaracy, horizonal and vertical

From: E. Michael McCardel (
Date: Tue Jul 06 2004 - 16:25:46 EDT

  • Next message: Leo Barhorst: "Obs July 05+06"

    If you want CORS data click the CORS link CORS/OPUS GPS DATA line. CORS are Continuosly Operating Reference Stations it all explained in links from the CORS page. If you want benchmark information Click on "datasheets" (Both are the red highlighted links near top of page). If you click on "datatsheets" on the sunsequent page you get something called "Retrieval Methods" you can search for Geodetic Benchmarks in a variety of ways.
    There is nothing intuitive to these pages. You have to play with them some.  
    If you're interested in benchmarks you might also try. where you can search by postal code PID (Point ID)
    EMike McCardel
    Survey marker locations in the usa are found at
    Hi Kevin,
    Can you be more specific?  I didn't see a link on that page that would let me
    find where survey markers are located.
    Tom Fly
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