Quaff - U.S. National Geodetic Survey

NAD 27 (North American Datum of 1927). Geodetic datum of the US prior to NAD 83. Superseded by NAD 83 in 1986. This is the datum of SPCS 27 and UTM 27. NAD 83 (North American Datum of 1983). Current official geodetic datum of the US. Replaced NAD 27 in 1986, which is the year of the initial NAD 83 adjustment. This is the datum of SPCS 83 and ... ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download