Alaska NAD 83 Official Protraction Diagram (OPD) Images
This data set contains Official Protraction Diagrams (OPDs) in Adobe PDF format. Atlantic Region OPDs are approximately 2 degrees wide by one degree high. OPDs are further subdivided into blocks that are 4800 x 4800 meters on a UTM plane. Where the OPD hits the UTM zone boundary, that zone boundary will be a geodesic …