Free Ordnance Survey Maps Northern Ireland: The historical ordnance survey of northern ireland (osni) maps available on this. Web ordnance survey of northern ireland (osni) is the official producer of high quality, accurate and current geographic. Web this service, hosted by ordnance survey ireland, provides a free download of data collected from the gnss (global.

Free Ordnance Survey Maps Northern Ireland

Please note that creating presentations is not supported in internet explorer versions 6,. Web ordnance survey of northern ireland (osni) has started work to collect highly accurate 3d digital data, known as point cloud data. Web this service, hosted by ordnance survey ireland, provides a free download of data collected from the gnss (global.