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Grid InQuest


3D Datum Transformations for Great Britain and Ireland

The Grid InQuest software provides a means for transforming coordinates between ETRS89 (WGS84) and the National coordinate systems of Great Britain, Northern Ireland and the Republic of Ireland. It provides a fully three dimensional transformation incorporating the latest geoid model and is the nationally recognised software for performing these conversions.

In conjunction with the Ordnance Survey of Great Britain, the Ordnance Survey of Northern Ireland and the Ordnance Survey of Ireland, Quest provides the Grid InQuest software and associated documentation free of charge for unrestricted use. For further information on the licensing see the documentation available for download with the software.

You can obtain a free copy of the software by registering on this website and downloading the product. Following the registration process, you will be able to download the product as well as supporting documentation.

The Grid InQuest product uses a DLL containing the actual transformation logic. This DLL is freely available for software developers to integrate into applications, for more information see the programming manual available for download with the software. The DLL is in use by more than 50 companies, including the Ordnance Survey on their www sites as part of their online coordinate transformation services. A Windows Installer Merge Module is available to ease the integration process.

For users that were using OSGB36 coordinates that have been converted from ETRS89 using OSTN97, the previous version of Grid InQuest (version 5) is available. To obtain this program please send an email to support@qgsl.com.

The current version number for Grid InQuest is 6.6.0. To view the version history, click here.

Quest is a Licensed System Supplier and a Licensed System Developer for the Ordnance Survey of Great Britain.



For further general information about the product, please click on the following links:

Support Information | Transformation Information
 

For more information click here to view the product brochure
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