Vertical Control Datums

Disscussing old, rare, very specific or otherwise uncommon units and measurements

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Vertical Control Datums

Postby jif » Wed Dec 01, 2004 10:50 pm

What is the conversion addend between USGS 1929 to IGLD? I have two sources that differ and suspect that the difference may be in the IGLD year.
jif
 
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Joined: Wed Dec 01, 2004 10:43 pm

Re: Vertical Control Datums

Postby Guest » Tue Oct 25, 2005 1:21 am

jif wrote:What is the conversion addend between USGS 1929 to IGLD? I have two sources that differ and suspect that the difference may be in the IGLD year.
Guest
 


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