Coordinate Reference Systems
Remarks
Also found with file name NA27SCRS.GSB. Uses NT method which expects longitudes positive west; EPSG GeogCRSs NAD27 (code 4267) and NAD83(CSRS) (code 4617) have longitudes positive east. Can be taken as an approximate CT NAD27 to WGS 84 - see code 1692.
Frequently Asked Questions
What is the accuracy of the NAD27 to NAD83(CSRS)v2 transformation?
This transformation (EPSG:9239) has an accuracy of 1.5m using the NTv2 method. Area of use: Canada - Quebec.