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    Re: Determining Elevation with an Altimeter
    From: Brian Whatcott
    Date: 2002 Mar 1, 12:20 -0600

    This URL certainly cuts out the need for an aero chart showing field elevation.
    In fact, if you could see one or more of the monuments from your location,
    a theodolite
    would be enough, else an altimeter standardized at the monument's pressure
    setting would provide the delta h.
    
    Brian W
    
    At 10:46 AM 3/1/02, you wrote:
    >Thanks!  The URL is
    >
    >http://www.ngs.noaa.gov/cgi-bin/ds_radius.prl
    >
    >-----Original Message-----
    >From: Navigation Mailing List
    >[mailto:NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM]On Behalf Of Jared Sherman
    >Sent: Thursday, February 28, 2002 9:31 PM
    >To: NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM
    >Subject: Re: Determining Elevation with an Altimeter
    >
    >
    >Ummm...not to be a party pooper, but there is a web site (USGS?) that
    >lists all USGS benchmark sites and their latest recorded
    >positions along with any adjustments noted. You can interogate the site by
    >giving it a lat/lon box and asking for a list of any
    >benchmarks in it, so it may be possibly to simply locate a nearby
    >benchmark and confirm the elevation and survey date. There will be
    >notes about the map datum and vertical offset as well.
    >
    >I think someone from this list had originally given it to me, I can't seem
    >to locate it right now.
    
    Brian Whatcott
       Altus OK                      Eureka!
    
    
    

       
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