![]() The Survey Date Widget allows you to identify the PRONI references for each historic Ordnance Survey map on the application at a specific point. The Bookmark Widget allows you to name and store links to specific areas, so you can easily navigate to a specific point during future visits (using the same PC/ tablet). The Legend Widget details the meaning of the various outlines and symbols used in the Maps viewer. To determine the grid reference for the map you require use the county indexes available in the Maps Reading Room or go to the Get-a map service on the. The Info Widget outlines the maps and datasets available on the PRONI Historical Maps viewer. This grating contact finder has suitable for newcomer additionally includes an short how to video. These layers can be selected using the Layer List widget. Grid reference finder Improve will map reading skills by scholarship how go read ampere 4-figure, 6-figure or 8-figure national grid reference. The Swipe widget provides a vertical bar on your screen which can be dragged back and forth across the screen to compare one map layer with another. Layers include seven historical Ordnance Survey maps (covering the years 1832 - 1986) and a range of datasets (including county, townland and parish boundaries and sites, landmarks and buildings of historical interest). The Layer List widget shows each of the optional layers which can be switched on or off. ![]() The application defaults to the OSNI Basemap, which is generated using a range of OSNI map products such as 1:50,000 Vector and Largescale data. The Basemap Gallery widget allows you to choose from a selection of four basemaps. The Help widget has a guide on how to use the PRONI Historical Maps viewer and a link to a PDF version of this guidance which can be downloaded for reference. Incidentally, NY 21538 07204 is the OS Coordinate for the summit of Scafell Pike accurate to 1m.Help using the Historical Maps viewer: Help Widget If you prefer to read your OS Coordinates as tradtional Two Letters and 6 Figures, just remove the last two numbers of each group - so NY 21538 07204 becomes NY 215 072 walks have Two Letter and 10 Figure OS Coordinates printed on our walks so you can load them into a hand held GPS device and establish the location of each critical decision point to 1m accuracy. If you were to convert the traditional Two Letters and 6 Figure number OS Coordinates to 100m accuracy it would appear as NY 21500 07200 If you were to convert the traditional Two Letters and 6 Figure number OS Coordinates to 10m accuracy it would appear as NY 2150 0720. NY 215 072) which indicates the same location on the ground but is only accurate to 100 metres. ![]() ![]() Traditional OS Coordinates consist of two letters and a 6 figure number (e.g. NY 21538 07204) indicates a location on the ground that is accurate to 1 metre. It also transforms GPS ellipsoid heights to orthometric. The Two Letter and 10 Figure OS Coordinates on our walks (e.g. The Coordinate Transformation Tool transforms GNSS based ETRS89 latitude and longitude or cartesian XYZ coordinates to the equivalent OSGB36 National Grid eastings and northings, and vice-versa, using Ordnance Surveys National Grid Transformation OSTN15. 4.3 Browsing or searching in specific record series. I have downloaded one of your route maps and can only see 10 reference coordinates, I wonder if you provide 6 figure OS coordinates for the walks?Ī. Use the advanced search to search for maps, either using the sheet number (for example, Devon VIII) or using a combination of place names with OS. OS Map Coordinates - converting 10 figure GPS Coordinates to 6 figure OS Coordinates
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