World Grid Shift Files
Posted by John Coldrick on 08 December 2011 03:03 PM


When projecting a dataset between two different datums, a transformation is required. Both equation-based and grid-based transformation methods are supported by MicroSurvey products. An equation-based transformation can use either a 3-parameter (dX, dY, dZ) or a 7-parameter transformation (dX, dY, dZ, rX, rY, rZ, ds) to translate between coordinates. A grid-based transformation uses binary files and interpolations that calculate the differences between the two geographic coordinate systems.

Mapping Folder Paths

The table below indicates the path to the Mapping folder where the contents of the ZIP files will be extracted..

ProductOperating SystemLocation
MicroSurvey CAD (similar for inCAD, embeddedCAD, etc.) Windows Vista or later C:\ProgramData\MicroSurvey\MSCAD\yyyy\mscad\Mapping\
FieldGenius (similar for EVR and Layout) Windows Vista or later C:\ProgramData\MicroSurvey\FieldGenius\yyyy\Mapping\
FieldGenius (similar for EVR and Layout) Win CE or Mobile (Path may vary)\MicroSurvey FieldGenius\Programs\Mapping\
STAR*NET Windows Vista or later C:\ProgramData\MicroSurvey\StarNet\V?\Mapping\

The mobile products will only display certain coordinate systems once the required files are present in the Mapping folder.


Each ZIP file contains applicable files and instructions on where to copy the files. Please contact MicroSurvey if you require support for additional transformations.

CountryTransformation(s)Coordinate System(s)File Downloads
Australia AGD66 <-> AGD94
AGD84 <-> AGD94
AMG66 Zones
AMG84 Zones
Belgium BD72 <-> ETRS89 Belgium - Lambert 1972
Canada NAD27 <-> ATS77
ATS77 <-> NAD83(CSRS)
NAD27 <-> NAD83 (NTv2)
NAD27 <-> NAD83(CSRS)
NAD83 <-> NAD83(CSRS)
ATS77 Zones
NAD27 Zones
NAD83(CSRS) Zones
NOTE: Many grid shift files are only available through your provincial contacts.
Germany DHDN <-> ETRS89 DHDN Zones
Greece EGSA87 <-> HTRS07 EGSA87/Hepos
Hungary EOVA <-> ETRS89 HU-EOV72
Ireland Irish National Grid <-> ETRS89
OSGB36 <-> ETRS89
Japan Tokyo <-> JGD2K Tokyo Zones
Netherlands RD/NAP <-> ETRS89 Netherlands RDNAP2008
New Zealand NZGD1949 <-> NZGD2000 NZGD1949-NZMG
NZGD49 Zones
Romania Romania Stereo 30 <-> WGS84
Romania Stereo 70 <-> WGS84
Slovakia - New
For use with FieldGenius 9 or newer
JTSK03 <-> JTSK2013 Slovak JTSK2013
Slovakia - Old
For use with FieldGenius 8 or older, MSCAD 2016 or older, STAR*NET 8 or older
United Kingdom - New
For use with FieldGenius 9 or newer
United Kingdom - Old
For use with FieldGenius 8 or older, MSCAD 2016 or older, STAR*NET 8 or older
OSGB36 <-> ETRS89 OSGB-GPS-2002
United States of America NAD27 <-> NAD83 (NADCON)
NAD83 <-> NAD83(HARN)
NAD27 Zones
HARN Zones

See Also: Geoid Model Downloads

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